Editing Linedef type

A [[linedef]] can create special effects by having a '''type'''. Over a hundred linedef types are available for use between [[Doom]] and [[Doom II]]. [[Heretic]], [[Strife]], and [[Doom 64]] include additional linedef types. [[Hexen]] generalizes them into [[Hexen action specials|action specials]], usable not just on linedefs but also on [[thing]]s and in [[ACS]] scripts.

Various [[source port]]s also add additional linedef types. [[Boom]] in particular includes both the [[Doom]] linedef types (known here as "regular") and a selection of "extended" and "generalized" linedef types now supported by many modern [[source port]]s (see [[:Category:Boom compatible]]).

Additional information on linedef types can be found in the [[Unofficial Doom Specs]]. There is also [[Linedef types Python code|Python code]] for generating and decoding types.

What follows is a complete table of linedef types throughout the [[Doom engine]] games and various source ports, followed by extensive detail on the functionality of linedef types. The latter is based on the document {{c|boomref.txt}} from the [[Boom]] source code distribution.

==Table of all types==
{| {{prettySortable|class=mw-collapsible mw-collapsed}}
! Type !! Origin !! Description
|-
|  1||[[Doom]]||DR Door
|-
|  1||[[Heretic]]||DR Door
|-
|  1||[[Strife]]||DR Door
|-
|  2||[[Doom]]||W1 Door Stay Open
|-
|  2||[[Heretic]]||W1 Door Stay Open
|-
|  2||[[Strife]]||W1 Door Stay Open
|-
|  3||[[Doom]]||W1 Door Close
|-
|  3||[[Heretic]]||W1 Door Close
|-
|  3||[[Strife]]||W1 Door Close
|-
|  4||[[Doom]]||W1 Door
|-
|  4||[[Heretic]]||W1 Door
|-
|  4||[[Strife]]||W1 Door Also Monsters
|-
|  5||[[Doom]]||W1 Floor To Lowest Adjacent Ceiling
|-
|  5||[[Heretic]]||W1 Floor To Lowest Adjacent Ceiling
|-
|  5||[[Strife]]||W1 Floor To Lowest Adjacent Ceil
|-
|  6||[[Doom]]||W1 Start Crusher, Fast Damage
|-
|  6||[[Heretic]]||W1 Start Crusher, Fast Damage
|-
|  6||[[Strife]]||W1 Start Crusher, Very Fast Damage
|-
|  7||[[Doom]]||S1 Build Stairs 8 Up
|-
|  7||[[Heretic]]||S1 Build Stairs 8 Up
|-
|  7||[[Strife]]||S1 Build Stairs 8 Up
|-
|  8||[[Doom]]||W1 Build Stairs 8 Up
|-
|  8||[[Heretic]]||W1 Build Stairs 8 Up
|-
|  8||[[Strife]]||W1 Build Stairs 8 Up
|-
|  9||[[Doom]]||S1 Floor Donut
|-
|  9||[[Heretic]]||S1 Floor Donut
|-
|  9||[[Strife]]||S1 Floor Donut
|-
| 10||[[Doom]]||W1 Lift Also Monsters
|-
| 10||[[Heretic]]||W1 Lift
|-
| 10||[[Strife]]||W1 Lift Also Monsters
|-
| 11||[[Doom]]||S1 Exit (Normal)
|-
| 11||[[Heretic]]||S1 Exit (Normal)
|-
| 11||[[Strife]]||SR Exit To Map #Tag (0 = Next)
|-
| 12||[[Doom]]||W1 Light To Highest Adjacent Level
|-
| 12||[[Heretic]]||W1 Light To Highest Adjacent Level
|-
| 12||[[Strife]]||W1 Light To Highest Adjacent Level
|-
| 13||[[Doom]]||W1 Light To 255
|-
| 13||[[Heretic]]||W1 Light To 255
|-
| 13||[[Strife]]||W1 Light To 255
|-
| 14||[[Doom]]||S1 Floor Up 32 Change Texture
|-
| 14||[[Heretic]]||S1 Floor Up 32 Change Texture
|-
| 14||[[Strife]]||S1 Floor Up 32 Change Texture
|-
| 15||[[Doom]]||S1 Floor Up 24 Change Texture
|-
| 15||[[Heretic]]||S1 Floor Up 24 Change Texture
|-
| 15||[[Strife]]||S1 Floor Up 24 Change Texture
|-
| 16||[[Doom]]||W1 Door Close and Open
|-
| 16||[[Heretic]]||W1 Door Close and Open
|-
| 16||[[Strife]]||W1 Door Close and Open
|-
| 17||[[Doom]]||W1 Light Blink 1.0 Sec
|-
| 17||[[Heretic]]||W1 Light Blink 1.0 Sec
|-
| 17||[[Strife]]||W1 Light Blink 1.0 Sec
|-
| 18||[[Doom]]||S1 Floor To Higher Adjacent Floor
|-
| 18||[[Heretic]]||S1 Floor To Higher Adjacent Floor
|-
| 18||[[Strife]]||S1 Floor To Higher Adjacent Floor
|-
| 19||[[Doom]]||W1 Floor To Highest Adjacent Floor
|-
| 19||[[Heretic]]||W1 Floor To Highest Adjacent Floor
|-
| 19||[[Strife]]||W1 Floor To Highest Adjacent Floor
|-
| 20||[[Doom]]||S1 Floor To Higher Floor Change Texture
|-
| 20||[[Heretic]]||S1 Floor To Higher Floor Change Texture
|-
| 20||[[Strife]]||S1 Floor To Higher Floor Change Texture
|-
| 21||[[Doom]]||S1 Lift
|-
| 21||[[Heretic]]||S1 Lift
|-
| 21||[[Strife]]||S1 Lift
|-
| 22||[[Doom]]||W1 Floor To Higher Floor Change Texture
|-
| 22||[[Heretic]]||W1 Floor To Higher Floor Change Texture
|-
| 22||[[Strife]]||W1 Floor To Higher Floor Change Texture
|-
| 23||[[Doom]]||S1 Floor To Lowest Adjacent Floor
|-
| 23||[[Heretic]]||S1 Floor To Lowest Adjacent Floor
|-
| 23||[[Strife]]||S1 Floor To Lowest Adjacent Floor
|-
| 24||[[Doom]]||G1 Floor To Lowest Adjacent Ceiling
|-
| 24||[[Heretic]]||G1 Floor To Lowest Adjacent Ceiling
|-
| 24||[[Strife]]||G1 Floor To Lowest Adjacent Ceiling
|-
| 25||[[Doom]]||W1 Start Crusher, Slow Damage
|-
| 25||[[Heretic]]||W1 Start Crusher, Slow Damage
|-
| 25||[[Strife]]||W1 Start Crusher, Slow No Damage
|-
| 26||[[Doom]]||DR Door Blue Key
|-
| 26||[[Heretic]]||DR Door Blue Key
|-
| 26||[[Strife]]||DR Door ID Badge
|-
| 27||[[Doom]]||DR Door Yellow Key
|-
| 27||[[Heretic]]||DR Door Yellow Key
|-
| 27||[[Strife]]||DR Door Passcard
|-
| 28||[[Doom]]||DR Door Red Key
|-
| 28||[[Heretic]]||DR Door Green Key
|-
| 28||[[Strife]]||DR Door ID Card
|-
| 29||[[Doom]]||S1 Door
|-
| 29||[[Heretic]]||S1 Door
|-
| 29||[[Strife]]||S1 Door
|-
| 30||[[Doom]]||W1 Floor Up Shortest Lower Texture
|-
| 30||[[Heretic]]||W1 Floor Up Shortest Lower Texture
|-
| 30||[[Strife]]||W1 Floor Up Shortest Lower Texture
|-
| 31||[[Doom]]||D1 Door Stay Open
|-
| 31||[[Heretic]]||D1 Door Stay Open
|-
| 31||[[Strife]]||D1 Door Stay Open
|-
| 32||[[Doom]]||D1 Door Blue Key
|-
| 32||[[Heretic]]||D1 Door Blue Key
|-
| 32||[[Strife]]||D1 Door Stay Open ID Badge
|-
| 33||[[Doom]]||D1 Door Red Key
|-
| 33||[[Heretic]]||D1 Door Green Key
|-
| 33||[[Strife]]||D1 Door Stay Open ID Card
|-
| 34||[[Doom]]||D1 Door Yellow Key
|-
| 34||[[Heretic]]||D1 Door Yellow Key
|-
| 34||[[Strife]]||D1 Door Stay Open Passcard
|-
| 35||[[Doom]]||W1 Light To 35
|-
| 35||[[Heretic]]||W1 Light To 35
|-
| 35||[[Strife]]||W1 Light To 35
|-
| 36||[[Doom]]||W1 Floor To 8 Above Highest Adjacent Floor Fast
|-
| 36||[[Heretic]]||W1 Floor To 8 Above Higher Adjacent Floor Fast
|-
| 36||[[Strife]]||W1 Floor To Highest Adjacent Floor Fast
|-
| 37||[[Doom]]||W1 Floor To Lowest Adjacent Floor Change Texture and Type
|-
| 37||[[Heretic]]||W1 Floor To Lowest Adjacent Floor Change Texture and Type
|-
| 37||[[Strife]]||W1 Floor To LAF Change Texture and Type
|-
| 38||[[Doom]]||W1 Floor To Lowest Adjacent Floor
|-
| 38||[[Heretic]]||W1 Floor To Lowest Adjacent Floor
|-
| 38||[[Strife]]||W1 Floor To Lowest Adjacent Floor
|-
| 39||[[Doom]]||W1 Teleport
|-
| 39||[[Heretic]]||W1 Teleport
|-
| 39||[[Strife]]||W1 Teleport
|-
| 40||[[Doom]]||W1 Ceiling To Highest Ceiling
|-
| 40||[[Heretic]]||W1 Ceiling To Highest Ceiling
|-
| 40||[[Strife]]||S1 Door Split Open To Lowest
|-
| 41||[[Doom]]||S1 Ceiling To Floor
|-
| 41||[[Heretic]]||S1 Ceiling To Floor
|-
| 41||[[Strife]]||S1 Ceiling To Floor
|-
| 42||[[Doom]]||SR Door Close
|-
| 42||[[Heretic]]||SR Door Close
|-
| 42||[[Strife]]||SR Door Close
|-
| 43||[[Doom]]||SR Ceiling To Floor
|-
| 43||[[Heretic]]||SR Ceiling To Floor
|-
| 43||[[Strife]]||SR Ceiling To Floor
|-
| 44||[[Doom]]||W1 Ceiling To 8 Above Floor
|-
| 44||[[Heretic]]||W1 Ceiling To 8 Above Floor
|-
| 44||[[Strife]]||W1 Crusher To Floor And Stops
|-
| 45||[[Doom]]||SR Floor To Highest Adjacent Floor
|-
| 45||[[Heretic]]||SR Floor To Highest Adjacent Floor
|-
| 45||[[Strife]]||SR Floor To Highest Adjacent Floor
|-
| 46||[[Doom]]||GR Door Also Monsters
|-
| 46||[[Heretic]]||GR Door Also Monsters
|-
| 46||[[Strife]]||GR Door
|-
| 47||[[Doom]]||G1 Floor To Higher Floor Change Texture
|-
| 47||[[Heretic]]||G1 Floor To Higher Floor Change Texture
|-
| 47||[[Strife]]||G1 Floor To Higher Floor Change Texture
|-
| 48||[[Doom]]||Scrolling Wall Left
|-
| 48||[[Heretic]]||Scrolling Wall Left
|-
| 48||[[Strife]]||Scrolling Wall Left
|-
| 49||[[Doom]]||S1 Start Crusher, Slow Damage
|-
| 49||[[Heretic]]||S1 Ceiling To 8 Above Floor
|-
| 49||[[Strife]]||S1 Ceiling To 8 Above Floor Continually
|-
| 50||[[Doom]]||S1 Door Close
|-
| 50||[[Heretic]]||S1 Door Close
|-
| 50||[[Strife]]||S1 Door Close
|-
| 51||[[Doom]]||S1 Exit (Secret)
|-
| 51||[[Heretic]]||S1 Exit (Secret)
|-
| 51||[[Strife]]||S1 Exit (Endgame)
|-
| 52||[[Doom]]||W1 Exit (Normal)
|-
| 52||[[Heretic]]||W1 Exit (Normal)
|-
| 52||[[Strife]]||W1 Exit to Map #Tag/100
|-
| 53||[[Doom]]||W1 Start Moving Floor
|-
| 53||[[Heretic]]||W1 Start Moving Floor
|-
| 53||[[Strife]]||W1 Start Moving Floor
|-
| 54||[[Doom]]||W1 Stop Moving Floor
|-
| 54||[[Heretic]]||W1 Stop Moving Floor
|-
| 54||[[Strife]]||W1 Stop Moving Floor
|-
| 55||[[Doom]]||S1 Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 55||[[Heretic]]||S1 Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 55||[[Strife]]||S1 Floor To 8 Below LAC and Crush
|-
| 56||[[Doom]]||W1 Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 56||[[Heretic]]||W1 Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 56||[[Strife]]||W1 Floor To 8 Below LAC and Crush
|-
| 57||[[Doom]]||W1 Stop Crusher
|-
| 57||[[Heretic]]||W1 Stop Crusher
|-
| 57||[[Strife]]||W1 Stop Crusher
|-
| 58||[[Doom]]||W1 Floor Up 24
|-
| 58||[[Heretic]]||W1 Floor Up 24
|-
| 58||[[Strife]]||W1 Floor Up 64
|-
| 59||[[Doom]]||W1 Floor Up 24 Change Texture and Type
|-
| 59||[[Heretic]]||W1 Floor Up 24 Change Texture and Type
|-
| 59||[[Strife]]||W1 Floor Up 24 Change Texture and Type
|-
| 60||[[Doom]]||SR Floor To Lowest Adjacent Floor
|-
| 60||[[Heretic]]||SR Floor To Lowest Adjacent Floor
|-
| 60||[[Strife]]||SR Floor To Lowest Adjacent Floor
|-
| 61||[[Doom]]||SR Door Stay Open
|-
| 61||[[Heretic]]||SR Door Stay Open
|-
| 61||[[Strife]]||SR Door Stay Open
|-
| 62||[[Doom]]||SR Lift
|-
| 62||[[Heretic]]||SR Lift
|-
| 62||[[Strife]]||SR Lift
|-
| 63||[[Doom]]||SR Door
|-
| 63||[[Heretic]]||SR Door
|-
| 63||[[Strife]]||SR Door
|-
| 64||[[Doom]]||SR Floor To Lowest Adjacent Ceiling
|-
| 64||[[Heretic]]||SR Floor To Lowest Adjacent Ceiling
|-
| 64||[[Strife]]||SR Floor To Lowest Adjacent Ceiling
|-
| 65||[[Doom]]||SR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 65||[[Heretic]]||SR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 65||[[Strife]]||SR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 66||[[Doom]]||SR Floor Up 24 Change Texture
|-
| 66||[[Heretic]]||SR Floor Up 24 Change Texture
|-
| 66||[[Strife]]||SR Floor Up 24 Change Texture
|-
| 67||[[Doom]]||SR Floor Up 32 Change Texture
|-
| 67||[[Heretic]]||SR Floor Up 32 Change Texture
|-
| 67||[[Strife]]||SR Floor Up 32 Change Texture
|-
| 68||[[Doom]]||SR Floor To Higher Floor Change Texture
|-
| 68||[[Heretic]]||SR Floor To Higher Floor Change Texture
|-
| 68||[[Strife]]||SR Floor To Higher Floor Change Texture
|-
| 69||[[Doom]]||SR Floor To Higher Adjacent Floor
|-
| 69||[[Heretic]]||SR Floor To Higher Adjacent Floor
|-
| 69||[[Strife]]||SR Floor To Higher Adjacent Floor
|-
| 70||[[Doom]]||SR Floor To 8 Above Higher Adjacent Floor Fast
|-
| 70||[[Heretic]]||SR Floor To 8 Above Highest Adjacent Floor Fast
|-
| 70||[[Strife]]||SR Floor To Highest Adjacent Floor Fast
|-
| 71||[[Doom]]||S1 Floor To 8 Above Higher Adjacent Floor Fast
|-
| 71||[[Heretic]]||S1 Floor To 8 Above Highest Adjacent Floor Fast
|-
| 71||[[Strife]]||S1 Floor To Highest Adjacent Floor Fast
|-
| 72||[[Doom]]||WR Ceiling To 8 Above Floor
|-
| 72||[[Heretic]]||WR Ceiling To 8 Above Floor
|-
| 72||[[Strife]]||WR Crusher To Floor And Stops
|-
| 73||[[Doom]]||WR Start Crusher, Slow Damage
|-
| 73||[[Heretic]]||WR Start Crusher, Slow Damage
|-
| 73||[[Strife]]||WR Start Crusher, Slow Damage
|-
| 74||[[Doom]]||WR Stop Crusher
|-
| 74||[[Heretic]]||WR Stop Crusher
|-
| 74||[[Strife]]||WR Stop Crusher
|-
| 75||[[Doom]]||WR Door Close
|-
| 75||[[Heretic]]||WR Door Close
|-
| 75||[[Strife]]||WR Door Close
|-
| 76||[[Doom]]||WR Door Close and Open
|-
| 76||[[Heretic]]||WR Door Close and Open
|-
| 76||[[Strife]]||WR Door Close and Open
|-
| 77||[[Doom]]||WR Start Crusher, Fast Damage
|-
| 77||[[Heretic]]||WR Start Crusher, Fast Damage
|-
| 77||[[Strife]]||WR Start Crusher, Very Fast Damage
|-
| 78||[[Boom]]||SR Change Floor Texture and Type (Numeric Model)
|-
| 79||[[Doom]]||WR Light To 35
|-
| 79||[[Heretic]]||WR Light To 35
|-
| 79||[[Strife]]||WR Light To 35
|-
| 80||[[Doom]]||WR Light To Highest Adjacent Level
|-
| 80||[[Heretic]]||WR Light To Highest Adjacent Level
|-
| 80||[[Strife]]||WR Light To Highest Adjacent Level
|-
| 81||[[Doom]]||WR Light To 255
|-
| 81||[[Heretic]]||WR Light To 255
|-
| 81||[[Strife]]||WR Light To 255
|-
| 82||[[Doom]]||WR Floor To Lowest Adjacent Floor
|-
| 82||[[Heretic]]||WR Floor To Lowest Adjacent Floor
|-
| 82||[[Strife]]||WR Floor To Lowest Adjacent Floor
|-
| 83||[[Doom]]||WR Floor To Highest Adjacent Floor
|-
| 83||[[Heretic]]||WR Floor To Highest Adjacent Floor
|-
| 83||[[Strife]]||WR Floor To Highest Adjacent Floor
|-
| 84||[[Doom]]||WR Floor To Lowest Adjacent Floor Change Texture and Type
|-
| 84||[[Heretic]]||WR Floor To Lowest Adjacent Floor Change Texture and Type
|-
| 84||[[Strife]]||WR Floor To Lowest Adjacent Floor Change Texture and Type
|-
| 85||[[Boom]]||-- Scrolling Wall (Right)
|-
| 86||[[Doom]]||WR Door Stay Open
|-
| 86||[[Heretic]]||WR Door Stay Open
|-
| 86||[[Strife]]||WR Door Stay Open
|-
| 87||[[Doom]]||WR Start Moving Floor
|-
| 87||[[Heretic]]||WR Start Moving Floor
|-
| 87||[[Strife]]||WR Start Moving Floor
|-
| 88||[[Doom]]||WR Lift Also Monsters
|-
| 88||[[Heretic]]||WR Lift
|-
| 88||[[Strife]]||WR Lift Also Monsters
|-
| 89||[[Doom]]||WR Stop Moving Floor
|-
| 89||[[Heretic]]||WR Stop Moving Floor
|-
| 89||[[Strife]]||WR Stop Moving Floor
|-
| 90||[[Doom]]||WR Door
|-
| 90||[[Heretic]]||WR Door
|-
| 90||[[Strife]]||WR Door
|-
| 91||[[Doom]]||WR Floor To Lowest Adjacent Ceiling
|-
| 91||[[Heretic]]||WR Floor To Lowest Adjacent Ceiling
|-
| 91||[[Strife]]||WR Floor To Lowest Adjacent Ceiling
|-
| 92||[[Doom]]||WR Floor Up 24
|-
| 92||[[Heretic]]||WR Floor Up 24
|-
| 92||[[Strife]]||WR Floor Up 64
|-
| 93||[[Doom]]||WR Floor Up 24 Change Texture and Type
|-
| 93||[[Heretic]]||WR Floor Up 24 Change Texture and Type
|-
| 93||[[Strife]]||WR Floor Up 24 Change Texture and Type
|-
| 94||[[Doom]]||WR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 94||[[Heretic]]||WR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 94||[[Strife]]||WR Floor To 8 Below Lowest Adjacent Ceiling and Crush
|-
| 95||[[Doom]]||WR Floor To Higher Floor Change Texture
|-
| 95||[[Heretic]]||WR Floor To Higher Floor Change Texture
|-
| 95||[[Strife]]||WR Floor To Higher Floor Change Texture
|-
| 96||[[Doom]]||WR Floor Up Shortest Lower Texture
|-
| 96||[[Heretic]]||WR Floor Up Shortest Lo Texture
|-
| 96||[[Strife]]||WR Floor Up Shortest Lower Texture
|-
| 97||[[Doom]]||WR Teleport
|-
| 97||[[Heretic]]||WR Teleport
|-
| 97||[[Strife]]||WR Teleport
|-
| 98||[[Doom]]||WR Floor To 8 Above Highest Adjacent Floor Fast
|-
| 98||[[Heretic]]||WR Floor To 8 Above Highest Adjacent Floor Fast
|-
| 98||[[Strife]]||WR Floor To Highest Adjacent Floor Fast
|-
| 99||[[Doom II]]||SR Door Blue Key Fast
|-
| 99||[[Heretic]]||Scrolling Wall Right
|-
| 99||[[Strife]]||SR Door Fast ID Badge
|-
|100||[[Doom II]]||W1 Build Stairs 16 and Crush
|-
|100||[[Heretic]]||WR Door Triple Speed
|-
|100||[[Strife]]||W1 Build Stairs 16 Crush
|-
|101||[[Doom]]||S1 Floor To Lowest Adjacent Ceiling
|-
|101||[[Heretic]]||S1 Floor To Lowest Adjacent Ceiling
|-
|101||[[Strife]]||S1 Floor To Lowest Adjacent Ceiling
|-
|102||[[Doom]]||S1 Floor To Highest Adjacent Floor
|-
|102||[[Heretic]]||S1 Floor To Highest Adjacent Floor
|-
|102||[[Strife]]||S1 Floor To Highest Adjacent Floor
|-
|103||[[Doom]]||S1 Door Stay Open
|-
|103||[[Heretic]]||S1 Door Stay Open
|-
|103||[[Strife]]||S1 Door Stay Open
|-
|104||[[Doom]]||W1 Light To Lowest Adjacent Level
|-
|104||[[Heretic]]||W1 Light To Lowest Adjacent Level
|-
|104||[[Strife]]||W1 Light To Lowest Adjacent Level
|-
|105||[[Doom II]]||WR Door Fast
|-
|105||[[Heretic]]||W1 Exit (Secret)
|-
|105||[[Strife]]||WR Door Fast
|-
|106||[[Doom II]]||WR Door Stay Open Fast
|-
|106||[[Heretic]]||W1 Build Stairs 16
|-
|106||[[Strife]]||WR Door Stay Open Fast
|-
|107||[[Doom II]]||WR Door Close Fast
|-
|107||[[Heretic]]||S1 Build Stairs 16
|-
|107||[[Strife]]||WR Door Close Fast
|-
|108||[[Doom II]]||W1 Door Fast
|-
|108||[[Strife]]||W1 Door Fast
|-
|109||[[Doom II]]||W1 Door Stay Open Fast
|-
|109||[[Strife]]||W1 Door Stay Open Fast
|-
|110||[[Doom II]]||W1 Door Close Fast
|-
|110||[[Strife]]||W1 Door Close Fast
|-
|111||[[Doom II]]||S1 Door Fast
|-
|111||[[Strife]]||S1 Door Fast
|-
|112||[[Doom II]]||S1 Door Stay Open Fast
|-
|112||[[Strife]]||S1 Door Stay Open Fast
|-
|113||[[Doom II]]||S1 Door Close Fast
|-
|113||[[Strife]]||S1 Door Close Fast
|-
|114||[[Doom II]]||SR Door Fast
|-
|114||[[Strife]]||SR Door Fast
|-
|115||[[Doom II]]||SR Door Stay Open Fast
|-
|115||[[Strife]]||SR Door Stay Open Fast
|-
|116||[[Doom II]]||SR Door Close Fast
|-
|116||[[Strife]]||SR Door Close Fast
|-
|117||[[Doom II]]||DR Door Fast
|-
|117||[[Strife]]||DR Door Fast
|-
|118||[[Doom II]]||D1 Door Fast
|-
|118||[[Strife]]||D1 Door Stay Open Fast
|-
|119||[[Doom II]]||W1 Floor To Higher Adjacent Floor
|-
|119||[[Strife]]||W1 Floor To Higher Adjacent Floor
|-
|120||[[Doom II]]||WR Lift Fast
|-
|120||[[Strife]]||WR Lift Fast
|-
|121||[[Doom II]]||W1 Lift Fast
|-
|121||[[Strife]]||W1 Lift Fast
|-
|122||[[Doom II]]||S1 Lift Fast
|-
|122||[[Strife]]||S1 Lift Fast
|-
|123||[[Doom II]]||SR Lift Fast
|-
|123||[[Strife]]||SR Lift Fast
|-
|124||[[Doom II]]||W1 Exit (Secret)
|-
|124||[[Strife]]||W1 Exit (Endgame)
|-
|125||[[Doom II]]||W1 Teleport Monsters Only
|-
|125||[[Strife]]||W1 Teleport Monsters Only
|-
|126||[[Doom II]]||WR Teleport Monsters Only
|-
|126||[[Strife]]||WR Teleport Monsters Only
|-
|127||[[Doom II]]||S1 Build Stairs 16 + Crush
|-
|127||[[Strife]]||S1 Build Stairs 16 Crush
|-
|128||[[Doom II]]||WR Floor To Higher Adjacent Floor
|-
|128||[[Strife]]||WR Floor To Higher Adjacent Floor
|-
|129||[[Doom II]]||WR Floor To Higher Floor Fast
|-
|129||[[Strife]]||WR Floor To Higher Floor Fast
|-
|130||[[Doom II]]||W1 Floor To Higher Floor Fast
|-
|130||[[Strife]]||W1 Floor To Higher Floor Fast
|-
|131||[[Doom II]]||S1 Floor To Higher Floor Fast
|-
|131||[[Strife]]||S1 Floor To Higher Floor Fast
|-
|132||[[Doom II]]||SR Floor To Higher Floor Fast
|-
|132||[[Strife]]||SR Floor To Higher Floor Fast
|-
|133||[[Doom II]]||S1 Door Blue Key Fast
|-
|133||[[Strife]]||S1 Door Fast ID Badge
|-
|134||[[Doom II]]||SR Door Red Key Fast
|-
|134||[[Strife]]||SR Door Fast ID Card
|-
|135||[[Doom II]]||S1 Door Red Key Fast
|-
|135||[[Strife]]||S1 Door Fast ID Card
|-
|136||[[Doom II]]||SR Door Yellow Key Fast
|-
|136||[[Strife]]||SR Door Fast Passcard
|-
|137||[[Doom II]]||S1 Door Yellow Key Fast
|-
|137||[[Strife]]||S1 Door Fast Passcard
|-
|138||[[Doom II]]||SR Light To 255
|-
|138||[[Strife]]||SR Light To 255
|-
|139||[[Doom II]]||SR Light To 35
|-
|139||[[Strife]]||SR Light To 35
|-
|140||[[Doom II]]||S1 Floor Up 512
|-
|140||[[Strife]]||S1 Floor Up 512
|-
|141||[[Doom II]]||W1 Start Crusher, Silent
|-
|141||[[Strife]]||W1 Start Crusher, Silent
|-
|142||[[Boom]]||W1 Floor Up 512
|-
|142||[[Strife]]||Scrolling Wall Up
|-
|143||[[Boom]]||W1 Lift Up 24 Change Texture
|-
|143||[[Strife]]||Scrolling Wall Down Triple Speed
|-
|144||[[Boom]]||W1 Lift Up 24 Remove Type
|-
|144||[[Strife]]||DR Door Animated
|-
|145||[[Boom]]||W1 Ceiling Down To Floor Fast
|-
|145||[[Strife]]||WR Exit To Map #Tag/100 Spot #Tag%100
|-
|146||[[Boom]]||W1 Floor Donut Raise
|-
|146||[[Strife]]||S1 Build Stairs 16 Down
|-
|147||[[Boom]]||WR Floor Up 512
|-
|147||[[Strife]]||S1 Clear Forcefield // Tagged
|-
|148||[[Boom]]||WR Lift Up 24 Change Texture
|-
|148||[[Strife]]||SR Forcefield
|-
|149||[[Boom]]||WR Lift Up 24 Remove Type
|-
|149||[[Strife]]||Scrolling Wall Right
|-
|150||[[Boom]]||WR Start Crusher Silent
|-
|150||[[Strife]]||WR Raise Alarm
|-
|151||[[Boom]]||WR Ceiling Up To Highest Ceiling
|-
|151||[[Strife]]||SR Door Fast Gold Key
|-
|152||[[Boom]]||WR Ceiling Down To Floor Fast
|-
|152||[[Strife]]||SR Door Fast Brass Key
|-
|153||[[Boom]]||W1 Change Floor Texture and Type (Trigger Model)
|-
|153||[[Strife]]||SR Door Fast Silver Key
|-
|154||[[Boom]]||WR Change Floor Texture and Type (Trigger Model)
|-
|154||[[Strife]]||SR Lift If Gold Key
|-
|155||[[Boom]]||WR Floor Donut Raise
|-
|155||[[Strife]]||SR Lift Up
|-
|156||[[Boom]]||WR Light Start Blinking
|-
|156||[[Strife]]||D1 Door Stay Open Brass Key
|-
|157||[[Boom]]||WR Light To Lowest Adjacent Level
|-
|157||[[Strife]]||D1 Door Stay Open Silver Key
|-
|158||[[Boom]]||S1 Floor Up By Shortest Lower Tex
|-
|158||[[Strife]]||D1 Door Stay Open Gold Key
|-
|159||[[Boom]]||S1 Floor To Lowest Adjacent Floor
|-
|159||[[Strife]]||DR Door Gold Key
|-
|160||[[Boom]]||S1 Floor Up 24 Change Texture and Type
|-
|160||[[Strife]]||DR Door Silver Key
|-
|161||[[Boom]]||S1 Floor Up 24
|-
|161||[[Strife]]||DR Door Brass Key
|-
|162||[[Boom]]||S1 Lift Perpetual
|-
|162||[[Strife]]||S1 Door Fast Brass Key
|-
|163||[[Boom]]||S1 Lift Stop
|-
|163||[[Strife]]||S1 Door Fast Silver Key
|-
|164||[[Boom]]||S1 Start Crusher, Fast Damage
|-
|164||[[Strife]]||S1 Door Fast Gold Key
|-
|165||[[Boom]]||S1 Start Crusher Silent
|-
|165||[[Strife]]||SR Fake Door 'Doesn't Seem To Work'
|-
|166||[[Boom]]||S1 Ceiling Up To Highest Ceiling
|-
|166||[[Strife]]||DR Door Severed Hand
|-
|167||[[Boom]]||S1 Ceiling Down To 8 Above Floor
|-
|167||[[Strife]]||S1 Door Fast Severed Hand
|-
|168||[[Boom]]||S1 Stop Crusher
|-
|168||[[Strife]]||SR Door Fast Severed Hand
|-
|169||[[Boom]]||S1 Light To Highest Adjacent Level
|-
|169||[[Strife]]||DR Door Base Key
|-
|170||[[Boom]]||S1 Light To 35
|-
|170||[[Strife]]||DR Door Govs Key
|-
|171||[[Boom]]||S1 Light To 255
|-
|171||[[Strife]]||S1 Door Fast Prison Key
|-
|172||[[Boom]]||S1 Light Start Blinking
|-
|172||[[Strife]]||SR Door Power 1 Key
|-
|173||[[Boom]]||S1 Light To Lowest Adjacent Level
|-
|173||[[Strife]]||SR Door Power 2 Key
|-
|174||[[Boom]]||S1 Teleport
|-
|174||[[Strife]]||W1 Door Split Open To Lowest
|-
|175||[[Boom]]||S1 Door Close and Open
|-
|175||[[Strife]]||WR Raise Alarm If <16 Above Floor
|-
|176||[[Boom]]||SR Floor Up By Shortest Lower Texture
|-
|176||[[Strife]]||SR Door Power 3 Key
|-
|177||[[Boom]]||SR Floor To Lowest Adjacent Floor
|-
|177||[[Strife]]||SR Lift If Power 3 Key
|-
|178||[[Boom]]||SR Floor Up 512
|-
|178||[[Strife]]||W1 Build Stairs 16 Down
|-
|179||[[Boom]]||SR Floor Up 24 Change Texture and Type
|-
|179||[[Strife]]||W1 Ceiling To Floor
|-
|180||[[Boom]]||SR Floor Up 24
|-
|180||[[Strife]]||G1 Floor Up 512 Change Texture and Type
|-
|181||[[Boom]]||SR Lift Perpetual
|-
|181||[[Strife]]||S1 Floor Up 512 Change Texture and Type
|-
|182||[[Boom]]||SR Lift Stop
|-
|182||[[Strife]]||G1 Break Glass
|-
|183||[[Boom]]||SR Start Crusher, Fast Damage
|-
|183||[[Strife]]||W1 Door Split Open To Nearest
|-
|184||[[Boom]]||SR Start Crusher
|-
|184||[[Strife]]||WR Lift
|-
|185||[[Boom]]||SR Start Crusher Silent
|-
|185||[[Strife]]||WR Teleport (Silent)
|-
|186||[[Boom]]||SR Ceiling Up To Highest Ceiling
|-
|186||[[Strife]]||WR Exit To Map #Tag/100 Spot #Tag%100 (Front Side)
|-
|187||[[Boom]]||SR Ceiling Down To 8 Above Floor
|-
|187||[[Strife]]||W1 Clear Forcefield If Quest Item Y Offset // Tagged
|-
|188||[[Boom]]||SR Stop Crusher
|-
|188||[[Strife]]||W1 Door Open If Quest Item 16
|-
|189||[[Boom]]||S1 Change Floor Texture and Type (Trigger Model)
|-
|189||[[Strife]]||S1 Door Split Open To Lowest Oracle Key
|-
|190||[[Boom]]||SR Change Floor Texture and Type (Trigger Model)
|-
|190||[[Strife]]||DR Door Order Key
|-
|191||[[Boom]]||SR Floor Donut Raise
|-
|191||[[Strife]]||SR Door Military ID
|-
|192||[[Boom]]||SR Light To Highest Adjacent Level
|-
|192||[[Strife]]||SR Door Warehouse Key
|-
|193||[[Boom]]||SR Light Start Blinking
|-
|193||[[Strife]]||W1 Floor To Lowest Adjacent Floor If Quest Item from Y Offset owned
|-
|194||[[Boom]]||SR Light To Lowest Adjacent Level
|-
|194||[[Strife]]||S1 Door Stay Open Free Prisoners
|-
|195||[[Boom]]||SR Teleport
|-
|195||[[Strife]]||WR Teleport (Zombie Changer)
|-
|196||[[Boom]]||SR Door Close then Open
|-
|196||[[Strife]]||W1 Floor To Lowest Adjacent Floor If 2+ [[The Sigil of the One God|Sigil]] Pieces
|-
|197||[[Boom]]||G1 Exit (Normal)
|-
|197||[[Strife]]||W1 Door Close Fast If 2+ [[The Sigil of the One God|Sigil]] Pieces
|-
|198||[[Boom]]||G1 Exit (Secret)
|-
|198||[[Strife]]||WR Raise Alarm If No Officer's Uniform
|-
|199||[[Boom]]||W1 Ceiling Down To Lowest Ceiling
|-
|199||[[Strife]]||S1 Ceiling To Floor Destroy Converter
|-
|200||[[Boom]]||W1 Ceiling Down To Highest Floor
|-
|200||[[Strife]]||W1 Door Open If [[The Sigil of the One God|Sigil]] Owned
|-
|201||[[Boom]]||WR Ceiling Down To Lowest Ceiling
|-
|201||[[Strife]]||W1 Message #Tag (Front Side Only)
|-
|202||[[Boom]]||WR Ceiling Down To Highest Floor
|-
|202||[[Strife]]||W1 Message #Tag
|-
|203||[[Boom]]||S1 Ceiling Down To Lowest Ceiling
|-
|203||[[Strife]]||W1 Set Music To Map #Tag
|-
|204||[[Boom]]||S1 Ceiling Down To Highest Floor
|-
|204||[[Strife]]||W1 Set Music To Map #Tag
|-
|205||[[Boom]]||SR Ceiling Down To Lowest Ceiling
|-
|205||[[Strife]]||SR Fake Door 'Only Available In Retail'
|-
|206||[[Boom]]||SR Ceiling Down To Highest Floor
|-
|206||[[Strife]]||WR Raise Alarm If Chalice Owned
|-
|207||[[Boom]]||W1 Teleport Preserve Direction (Silent)
|-
|207||[[Strife]]||SR Door Animated
|-
|208||[[Boom]]||WR Teleport Preserve Direction (Silent)
|-
|208||[[Strife]]||WR Raise Alarm If [[Flamethrower]] Owned
|-
|209||[[Boom]]||S1 Teleport Preserve Direction (Silent)
|-
|209||[[Strife]]||S1 Build Stairs 16 Down If [[Chalice]] Owned
|-
|210||[[Boom]]||SR Teleport Preserve Direction (Silent)
|-
|210||[[Strife]]||W1 Message #Tag If [[Flamethrower]] (No Log)
|-
|211||[[Boom]]||SR Toggle Floor To Ceiling (Instant)
|-
|211||[[Strife]]||SR Message #Tag (No Log)
|-
|212||[[Boom]]||WR Toggle Floor To Ceiling (Instant)
|-
|212||[[Strife]]||W1 Floor To Lowest Adjacent Floor If [[Flamethrower]] Owned
|-
|213||[[Boom]]||-- Transfer Floor Light
|-
|213||[[Strife]]||DR Door Chalice
|-
|214||[[Boom]]||-- Accelerate Tagged Ceiling w.r.t. 1st Side's Sector
|-
|214||[[Strife]]||SR Lift Slow
|-
|215||[[Boom]]||-- Accelerate Tagged Floor w.r.t. 1st Side's Sector
|-
|215||[[Strife]]||W1 Message #Tag/100 If Quest Item #Tag%100 Owned
|-
|216||[[Boom]]||-- Accelerate Objects on Tagged Floor wrt 1st Side's Sector
|-
|216||[[Strife]]||WR Door If Quest Item from Y Offset Owned
|-
|217||[[Boom]]||-- Accelerate Objects and Tagged Floor wrt 1st Side's Sector
|-
|217||[[Strife]]||DR Door Core Key
|-
|218||[[Boom]]||-- Accelerate Tagged Wall w.r.t 1st Side's Sector
|-
|219||[[Boom]]||W1 Floor Down To Adjacent Floor
|-
|219||[[Strife]]||S1 Floor To Higher Adjacent Floor If Blue Crystal Key Owned
|-
|220||[[Boom]]||WR Floor Down To Adjacent Floor
|-
|220||[[Strife]]||S1 Floor To Higher Adjacent Floor If Red Crystal Key Owned
|-
|221||[[Boom]]||S1 Floor Down To Adjacent Floor
|-
|221||[[Strife]]||DR Door Mauler Key
|-
|222||[[Boom]]||SR Floor Down To Adjacent Floor
|-
|223||[[Boom]]||-- Set Friction To Length
|-
|223||[[Strife]]||SR Door Mine Key
|-
|224||[[Boom]]||-- Set Wind
|-
|224||[[Strife]]||DR Door Chapel Key
|-
|225||[[Boom]]||-- Set Current
|-
|225||[[Strife]]||DR Door Catacomb Key
|-
|226||[[Boom]]||-- Point Pusher
|-
|226||[[Strife]]||S1 Floor To Higher Adjacent Floor If Training Area Complete
|-
|227||[[Boom]]||W1 Elevator To Higher Floor
|-
|227||[[Strife]]||W1 Door Close If Quest Item from Y Offset Owned
|-
|228||[[Boom]]||WR Elevator To Higher Floor
|-
|228||[[Strife]]||W1 Entity Taunt If Quest Item 24 Owned
|-
|229||[[Boom]]||S1 Elevator To Higher Floor
|-
|229||[[Strife]]||SR Door Animated If [[The Sigil of the One God|Sigil]] Complete
|-
|230||[[Boom]]||SR Elevator To Higher Floor
|-
|230||[[Strife]]||W1 Door Open If Quest Item from Y Offset Owned
|-
|231||[[Boom]]||W1 Elevator To Lower Floor
|-
|231||[[Strife]]||WR Teleport (Silent Source)
|-
|232||[[Boom]]||WR Elevator To Lower Floor
|-
|232||[[Strife]]||DR Door Oracle Pass
|-
|233||[[Boom]]||S1 Elevator To Lower Floor
|-
|233||[[Strife]]||SR Door Split Open To Lowest Log Msg 70
|-
|234||[[Boom]]||SR Elevator To Lower Floor
|-
|234||[[Strife]]||SR Door If [[Irale]] Unlocked
|-
|235||[[Boom]]||W1 Elevator To Current Floor
|-
|235||[[Strife]]||S1 Door Split Open To Lowest If [[The Sigil of the One God|Sigil]] Complete
|-
|236||[[Boom]]||WR Elevator To Current Floor
|-
|237||[[Boom]]||S1 Elevator To Current Floor
|-
|238||[[Boom]]||SR Elevator To Current Floor
|-
|239||[[Boom]]||W1 Change Floor Texture and Type (Numeric Model)
|-
|240||[[Boom]]||WR Change Floor Texture and Type (Numeric Model)
|-
|241||[[Boom]]||S1 Change Floor Texture and Type (Numeric Model)
|-
|242||[[Boom]]||-- Transfer Heights
|-
|243||[[Boom]]||W1 Teleport Line
|-
|244||[[Boom]]||WR Teleport Line
|-
|245||[[Boom]]||-- Scroll Tagged Ceiling w.r.t. 1st Side's Sector
|-
|246||[[Boom]]||-- Scroll Tagged Floor w.r.t. 1st Side's Sector
|-
|247||[[Boom]]||-- Push Objects on Tagged Floor wrt 1st Side's Sector
|-
|248||[[Boom]]||-- Push Objects & Tagged Floor wrt 1st Side's Sector
|-
|249||[[Boom]]||-- Scroll Tagged Wall w.r.t 1st Side's Sector
|-
|250||[[Boom]]||-- Scroll Tagged Ceiling
|-
|251||[[Boom]]||-- Scroll Tagged Floor
|-
|252||[[Boom]]||-- Carry Objects on Tagged Floor
|-
|253||[[Boom]]||-- Scroll Tagged Floor, Carry Objects
|-
|254||[[Boom]]||-- Scroll Tagged Wall, Same as Floor/Ceiling
|-
|255||[[Boom]]||-- Scroll Wall Using Sidedef Offsets
|-
|256||[[Boom]]||WR Build Stairs 8
|-
|257||[[Boom]]||WR Build Stairs 16 + Crush
|-
|258||[[Boom]]||SR Build Stairs 8
|-
|259||[[Boom]]||SR Build Stairs 16 + Crush
|-
|260||[[Boom]]||-- Translucent Line
|-
|261||[[Boom]]||-- Transfer Ceiling Light
|-
|262||[[Boom]]||W1 Teleport Line (Reversed)
|-
|263||[[Boom]]||WR Teleport Line (Reversed)
|-
|264||[[Boom]]||W1 Teleport Line Monsters Only (Reversed)
|-
|265||[[Boom]]||WR Teleport Line Monsters Only (Reversed)
|-
|266||[[Boom]]||W1 Teleport Line Monsters Only
|-
|267||[[Boom]]||WR Teleport Line Monsters Only
|-
|268||[[Boom]]||W1 Teleport Monsters Only (Silent)
|-
|269||[[Boom]]||WR Teleport Monsters Only (Silent)
|-
|270||[[Eternity Engine|Eternity]]||ExtraDataSpecial
|-
|270||[[ZDoom]]||WR [[zdoom:FS_Execute|FS_Execute]](tag)
|-
|271||[[MBF]]||Transfer upper texture to tagged sector sky
|-
|272||[[MBF]]||Transfer upper texture to tagged sector sky (flipped)
|-
|272||[[SMMU]]||WR Start [[FraggleScript|FS]] script with tag number
|-
|273||[[SMMU]]||WR Start [[FraggleScript|FS]] script, 1-way trigger
|-
|274||[[SMMU]]||W1 Start [[FraggleScript|FS]] script with tag number
|-
|275||[[SMMU]]||W1 Start [[FraggleScript|FS]] script, 1-way trigger
|-
|276||[[SMMU]]||SR Start [[FraggleScript|FS]] script with tag number
|-
|277||[[SMMU]]||S1 Start [[FraggleScript|FS]] script with tag number
|-
|278||[[SMMU]]||GR Start [[FraggleScript|FS]] script with tag number
|-
|279||[[SMMU]]||G1 Start [[FraggleScript|FS]] script with tag number 
|-
|280||[[Doom Legacy|Legacy]]||-- Deep Water with Water Colormap
|-
|281||[[Eternity Engine|Eternity]]||3DMidTex_MoveWithFloor
|-
|281||[[Doom Legacy|Legacy]]||-- Solid 3D Floor with Shadow
|-
|282||[[Eternity Engine|Eternity]]||3DMidTex_MoveWithCeiling
|-
|282||[[Doom Legacy|Legacy]]||-- Generate Colormap (Upper Tex is RGB, Middle Tex is Fade Distance, Lower Tex is Fade Color)
|-
|283||[[Eternity Engine|Eternity]]||Portal_PlaneCeiling
|-
|283||[[Doom Legacy|Legacy]]||-- Fog Sheet on Middle Textures
|-
|284||[[Eternity Engine|Eternity]]||Portal_PlaneFloor
|-
|284||[[Doom Legacy|Legacy]]||-- Translucent Line (TRANSMED)
|-
|285||[[Eternity Engine|Eternity]]||Portal_PlaneFloorCeiling
|-
|285||[[Doom Legacy|Legacy]]||-- Translucent Line (TRANSMOR)
|-
|286||[[Eternity Engine|Eternity]]||Portal_HorizonCeiling
|-
|286||[[Doom Legacy|Legacy]]||-- Translucent Line (TRANSHI)
|-
|287||[[Eternity Engine|Eternity]]||Portal_HorizonFloor
|-
|287||[[Doom Legacy|Legacy]]||-- Translucent Line (TRANSFIR)
|-
|288||[[Eternity Engine|Eternity]]||Portal_HorizonFloorCeiling
|-
|288||[[Doom Legacy|Legacy]]||-- Translucent Line (TRANSFX1)
|-
|289||[[Eternity Engine|Eternity]]||Portal_LineTransfer
|-
|289||[[Doom Legacy|Legacy]]||-- Solid 3D Floor without Shadow
|-
|290||[[Eternity Engine|Eternity]]||Portal_SkyboxCeiling
|-
|290||[[Doom Legacy|Legacy]]||-- Instant Lower Floor
|-
|291||[[Eternity Engine|Eternity]]||Portal_SkyboxFloor
|-
|291||[[Doom Legacy|Legacy]]||-- Instant Raise Ceiling
|-
|292||[[Eternity Engine|Eternity]]||Portal_SkyboxFloorCeiling
|-
|293||[[Eternity Engine|Eternity]]||TransferHereticWind
|-
|294||[[Eternity Engine|Eternity]]||TransferHereticCurrent
|-
|295||[[Eternity Engine|Eternity]]||Portal_AnchoredCeiling
|-
|296||[[Eternity Engine|Eternity]]||Portal_AnchoredFloor
|-
|297||[[Eternity Engine|Eternity]]||Portal_AnchoredFloorCeiling
|-
|298||[[Eternity Engine|Eternity]]||Portal_AnchorLine
|-
|299||[[Eternity Engine|Eternity]]||Portal_AnchorLineFloor
|-
|300||[[Eternity Engine|Eternity]]||Door_Raise (param)
|-
|300||[[Doom Legacy|Legacy]]||-- Solid Translucent 3D Floor (Upper Texture is Alpha, default 128)
|-
|301||[[Eternity Engine|Eternity]]||Door_Open (param)
|-
|301||[[Doom Legacy|Legacy]]||-- Translucent 3D Water (Upper Texture is Alpha + Fog, default 127A)
|-
|302||[[Eternity Engine|Eternity]]||Door_Close (param)
|-
|302||[[Doom Legacy|Legacy]]||-- 3D Fog (Upper Texture is Alpha + Fog, default 110F)
|-
|303||[[Eternity Engine|Eternity]]||Door_CloseWaitOpen (param)
|-
|303||[[Doom Legacy|Legacy]]||-- 3D Ceiling Light Effect
|-
|304||[[Eternity Engine|Eternity]]||Door_WaitRaise (param)
|-
|304||[[Doom Legacy|Legacy]]||-- Opaque Water (Upper Texture is Alpha + Fog, default 190A)
|-
|305||[[Eternity Engine|Eternity]]||Door_WaitClose (param)
|-
|305||[[Doom Legacy|Legacy]]||-- 3D Light Effect
|-
|306||[[Eternity Engine|Eternity]]||Floor_RaiseToHighest (param)
|-
|306||[[Doom Legacy|Legacy]]||-- Invisible Floor
|-
|307||[[Eternity Engine|Eternity]]||Floor_LowerToHighest (param)
|-
|308||[[Eternity Engine|Eternity]]||Floor_RaiseToLowest (param)
|-
|309||[[Eternity Engine|Eternity]]||Floor_LowerToLowest (param)
|-
|310||[[Eternity Engine|Eternity]]||Floor_RaiseToNearest (param)
|-
|311||[[Eternity Engine|Eternity]]||Floor_LowerToNearest (param)
|-
|312||[[Eternity Engine|Eternity]]||Floor_RaiseToLowestCeiling (param)
|-
|313||[[Eternity Engine|Eternity]]||Floor_LowerToLowestCeiling (param)
|-
|314||[[Eternity Engine|Eternity]]||Floor_RaiseToCeiling (param)
|-
|315||[[Eternity Engine|Eternity]]||Floor_RaiseByTexture (param)
|-
|316||[[Eternity Engine|Eternity]]||Floor_LowerByTexture (param)
|-
|317||[[Eternity Engine|Eternity]]||Floor_RaiseByValue (param)
|-
|318||[[Eternity Engine|Eternity]]||Floor_LowerByValue (param)
|-
|319||[[Eternity Engine|Eternity]]||Floor_MoveToValue (param)
|-
|320||[[Eternity Engine|Eternity]]||Floor_RaiseInstant (param)
|-
|321||[[Eternity Engine|Eternity]]||Floor_LowerInstant (param)
|-
|322||[[Eternity Engine|Eternity]]||Floor_ToCeilingInstant (param)
|-
|323||[[Eternity Engine|Eternity]]||Ceiling_RaiseToHighest (param)
|-
|324||[[Eternity Engine|Eternity]]||Ceiling_ToHighestInstant (param)
|-
|325||[[Eternity Engine|Eternity]]||Ceiling_RaiseToNearest (param)
|-
|326||[[Eternity Engine|Eternity]]||Ceiling_LowerToNearest (param)
|-
|327||[[Eternity Engine|Eternity]]||Ceiling_RaiseToLowest (param)
|-
|328||[[Eternity Engine|Eternity]]||Ceiling_LowerToLowest (param)
|-
|329||[[Eternity Engine|Eternity]]||Ceiling_RaiseToHighestFloor (param)
|-
|330||[[Eternity Engine|Eternity]]||Ceiling_LowerToHighestFloor (param)
|-
|331||[[Eternity Engine|Eternity]]||Ceiling_ToFloorInstant (param)
|-
|332||[[Eternity Engine|Eternity]]||Ceiling_LowerToFloor (param)
|-
|333||[[Eternity Engine|Eternity]]||Ceiling_RaiseByTexture (param)
|-
|333||[[ZDoom]]||[[zdoom:Static_Init|Static_Init]] (tag, Init_Gravity)
|-
|334||[[Eternity Engine|Eternity]]||Ceiling_LowerByTexture (param)
|-
|334||[[ZDoom]]||[[zdoom:Static_Init|Static_Init]] (tag, Init_Color)
|-
|335||[[Eternity Engine|Eternity]]||Ceiling_RaiseByValue (param)
|-
|335||[[ZDoom]]||[[zdoom:Static_Init|Static_Init]] (tag, Init_Damage)
|-
|336||[[Eternity Engine|Eternity]]||Ceiling_LowerByValue (param)
|-
|336||[[ZDoom]]||[[zdoom:Line_Mirror|Line_Mirror]] ()
|-
|337||[[Eternity Engine|Eternity]]||Ceiling_MoveToValue (param)
|-
|337||[[ZDoom]]||[[zdoom:Line_Horizon|Line_Horizon]] ()
|-
|338||[[Eternity Engine|Eternity]]||Ceiling_RaiseInstant (param)
|-
|338||[[ZDoom]]||W1 [[zdoom:Floor_Waggle|Floor_Waggle]] (tag, 24, 32, 0, 0)
|-
|339||[[Eternity Engine|Eternity]]||Ceiling_LowerInstant (param)
|-
|339||[[ZDoom]]||W1 [[zdoom:Floor_Waggle|Floor_Waggle]] (tag, 12, 32, 0, 0)
|-
|340||[[Eternity Engine|Eternity]]||Stairs_BuildUpDoom (param)
|-
|340||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (1, 0)	// Slope front floor
|-
|341||[[Eternity Engine|Eternity]]||Stairs_BuildDownDoom (param)
|-
|341||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (0, 1)	// Slope front ceiling
|-
|342||[[Eternity Engine|Eternity]]||Stairs_BuildUpDoomSync (param)
|-
|342||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (1, 1)	// Slope front floor and ceiling
|-
|343||[[Eternity Engine|Eternity]]||Stairs_BuildDownDoomSync (param)
|-
|343||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (2, 0)	// Slope back floor
|-
|344||[[Eternity Engine|Eternity]]||Portal_TwowayCeiling
|-
|344||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (0, 2)	// Slope back ceiling
|-
|345||[[Eternity Engine|Eternity]]||Portal_TwowayFloor
|-
|345||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (2, 2)	// Slope back floor and ceiling
|-
|346||[[Eternity Engine|Eternity]]||Portal_TwowayAnchorLine
|-
|346||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (2, 1)	// Slope b.f. and f.c.
|-
|347||[[Eternity Engine|Eternity]]||Portal_TwowayAnchorLineFloor
|-
|347||[[ZDoom]]||[[zdoom:Plane_Align|Plane_Align]] (1, 2)	// Slope f.f. and b.c.
|-
|348||[[Eternity Engine|Eternity]]||Polyobj_StartLine (param)
|-
|348||[[ZDoom]]||W1 [[zdoom:Autosave|Autosave]] ()
|-
|349||[[Eternity Engine|Eternity]]||Polyobj_ExplicitLine (param)
|-
|349||[[ZDoom]]||S1 [[zdoom:Autosave|Autosave]] ()
|-
|350||[[Eternity Engine|Eternity]]||Polyobj_DoorSlide (param)
|-
|350||[[ZDoom]]||[[zdoom:Transfer_Heights|Transfer_Heights]] (tag, 2)	// Just fake the floor
|-
|351||[[Eternity Engine|Eternity]]||Polyobj_DoorSwing (param)
|-
|351||[[ZDoom]]||[[zdoom:Transfer_Heights|Transfer_Heights]] (tag, 6)	// Just fake the floor and clip it too
|-
|352||[[Eternity Engine|Eternity]]||Polyobj_Move (param)
|-
|352||[[ZDoom]]||[[zdoom:Sector_CopyScroller|Sector_CopyScroller]](tag, 1)	// copy ceiling scroller
|-
|353||[[Eternity Engine|Eternity]]||Polyobj_OR_Move (param)
|-
|353||[[ZDoom]]||[[zdoom:Sector_CopyScroller|Sector_CopyScroller]](tag, 2)	// copy floor scroller
|-
|354||[[Eternity Engine|Eternity]]||Polyobj_RotateRight (param)
|-
|354||[[ZDoom]]||[[zdoom:Sector_CopyScroller|Sector_CopyScroller]](tag, 6)	// copy carrying floor scroller
|-
|355||[[Eternity Engine|Eternity]]||Polyobj_OR_RotateRight (param)
|-
|356||[[Eternity Engine|Eternity]]||Polyobj_RotateLeft (param)
|-
|357||[[Eternity Engine|Eternity]]||Polyobj_OR_RotateLeft (param)
|-
|358||[[Eternity Engine|Eternity]]||Portal_LinkedCeiling
|-
|359||[[Eternity Engine|Eternity]]||Portal_LinkedFloor
|-
|360||[[Eternity Engine|Eternity]]||Portal_LinkedAnchorLine
|-
|361||[[Eternity Engine|Eternity]]||Portal_LinkedAnchorLineFloor
|-
|362||[[Eternity Engine|Eternity]]||Pillar_Build (param)
|-
|363||[[Eternity Engine|Eternity]]||Pillar_BuildAndCrush (param)
|-
|364||[[Eternity Engine|Eternity]]||Pillar_Open (param)
|-
|365||[[Eternity Engine|Eternity]]||ACS_Execute (param)
|-
|366||[[Eternity Engine|Eternity]]||ACS_Suspend (param)
|-
|367||[[Eternity Engine|Eternity]]||ACS_Terminate (param)
|-
|368||[[Eternity Engine|Eternity]]||Light_RaiseByValue (param)
|-
|369||[[Eternity Engine|Eternity]]||Light_LowerByValue (param)
|-
|370||[[Eternity Engine|Eternity]]||Light_ChangeToValue (param)
|-
|371||[[Eternity Engine|Eternity]]||Light_Fade (param)
|-
|372||[[Eternity Engine|Eternity]]||Light_Glow (param)
|-
|373||[[Eternity Engine|Eternity]]||Light_Flicker (param)
|-
|374||[[Eternity Engine|Eternity]]||Light_Strobe (param)
|-
|375||[[Eternity Engine|Eternity]]||Radius_Quake (param)
|-
|376||[[Eternity Engine|Eternity]]||Portal_LinkedLineToLine
|-
|377||[[Eternity Engine|Eternity]]||Portal_LinkedLineToLineAnchor
|-
|378||[[Eternity Engine|Eternity]]||Line_SetIdentification (param)
|-
|379||[[Eternity Engine|Eternity]]||Attach_SetCeilingControl
|-
|380||[[Eternity Engine|Eternity]]||Attach_SetFloorControl
|-
|381||[[Eternity Engine|Eternity]]||Attach_FloorToControl
|-
|382||[[Eternity Engine|Eternity]]||Attach_CeilingToControl
|-
|383||[[Eternity Engine|Eternity]]||Attach_MirrorFloorToControl
|-
|384||[[Eternity Engine|Eternity]]||Attach_MirrorCeilingToControl
|-
|385||[[Eternity Engine|Eternity]]||Apply_PortalToFrontsector
|-
|386||[[Eternity Engine|Eternity]]||Slope_FrontsectorFloor
|-
|387||[[Eternity Engine|Eternity]]||Slope_FrontsectorCeiling
|-
|388||[[Eternity Engine|Eternity]]||Slope_FrontsectorFloorAndCeiling
|-
|389||[[Eternity Engine|Eternity]]||Slope_BacksectorFloor
|-
|390||[[Eternity Engine|Eternity]]||Slope_BacksectorCeiling
|-
|391||[[Eternity Engine|Eternity]]||Slope_BacksectorFloorAndCeiling
|-
|392||[[Eternity Engine|Eternity]]||Slope_BackFloorAndFrontCeiling
|-
|393||[[Eternity Engine|Eternity]]||Slope_BackCeilingAndFrontFloor
|-
|394||[[Eternity Engine|Eternity]]||Slope_FrontFloorToTaggedSlope
|-
|395||[[Eternity Engine|Eternity]]||Slope_FrontCeilingToTaggedSlope
|-
|396||[[Eternity Engine|Eternity]]||Slope_FrontFloorAndCeilingToTaggedSlope
|-
|397||[[Eternity Engine|Eternity]]||Floor_Waggle (param)
|-
|398||[[Eternity Engine|Eternity]]||Thing_Spawn (param)
|-
|399||[[Eternity Engine|Eternity]]||Thing_SpawnNoFog (param)
|-
|400||[[EDGE]]||Thick Extrafloor
|-
|400||[[Eternity Engine|Eternity]]||Teleport_EndGame (param)
|-
|401||[[EDGE]]||Thick Extrafloor (use upper texture)
|-
|402||[[EDGE]]||Thick Extrafloor (use lower texture)
|-
|403||[[EDGE]]||Liquid Extrafloor (Opaque)
|-
|404||[[EDGE]]||Liquid Extrafloor (80% Translucent)
|-
|405||[[EDGE]]||Liquid Extrafloor (60% Translucent)
|-
|406||[[EDGE]]||Liquid Extrafloor (40% Translucent)
|-
|407||[[EDGE]]||Liquid Extrafloor (20% Translucent)
|-
|408||[[EDGE]]||Liquid Extrafloor (Invisible)
|-
|409||[[EDGE]]||Translucent Linedef (80%)
|-
|410||[[EDGE]]||Translucent Linedef (60%)
|-
|411||[[EDGE]]||Translucent Linedef (40%)
|-
|412||[[EDGE]]||Translucent Linedef (20%)
|-
|413||[[EDGE]]||Thin Extrafloor (Opaque)
|-
|414||[[EDGE]]||Thin Extrafloor (80% Translucent)
|-
|415||[[EDGE]]||Thin Extrafloor (60% Translucent)
|-
|416||[[EDGE]]||Thin Extrafloor (40% Translucent)
|-
|417||[[EDGE]]||Thin Extrafloor (20% Translucent)
|-
|418||[[EDGE]]||Enable Tagged RTS - S1
|-
|419||[[EDGE]]||Enable Tagged RTS - SR
|-
|420||[[EDGE]]||Enable Tagged RTS - W1
|-
|421||[[EDGE]]||Enable Tagged RTS - WR
|-
|422||[[EDGE]]||SCROLL RIGHT
|-
|423||[[EDGE]]||SCROLL UP
|-
|424||[[EDGE]]||SCROLL DOWN
|-
|425||[[EDGE]]||SCROLL LEFT AND UP
|-
|426||[[EDGE]]||SCROLL LEFT AND DOWN
|-
|427||[[EDGE]]||SCROLL RIGHT AND UP
|-
|428||[[EDGE]]||SCROLL RIGHT AND DOWN
|-
|429||[[EDGE]]||SCROLL FAST LOWER AND MIDDLE TEXTURE (WATERFALLS)
|-
|434||[[EDGE]]||S1, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|435||[[EDGE]]||SR, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|436||[[EDGE]]||W1, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|437||[[EDGE]]||WR, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|438||[[EDGE]]||G1, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|439||[[EDGE]]||GR, RAISE FLOOR 2 UNITS (USE FOR RTS ONHEIGHT EVENTS)
|-
|440||[[EDGE]]||Enable Tagged RTS - G1
|-
|441||[[EDGE]]||Enable Tagged RTS - GR
|-
|442||[[EDGE]]||Sliding door (LEFT), DR + MONSTERS
|-
|443||[[EDGE]]||Sliding door (LEFT), DR
|-
|444||[[EDGE]]||Sliding door (LEFT), DR + FAST
|-
|445||[[EDGE]]||Sliding door (LEFT), D1
|-
|446||[[EDGE]]||Sliding door (RIGHT), DR + MONSTERS
|-
|447||[[EDGE]]||Sliding door (RIGHT), DR
|-
|448||[[EDGE]]||Sliding door (RIGHT), DR + FAST
|-
|449||[[EDGE]]||Sliding door (RIGHT), D1
|-
|450||[[EDGE]]||Sliding door (CENTER), DR + MONSTERS
|-
|451||[[EDGE]]||Sliding door (CENTER), DR
|-
|452||[[EDGE]]||Sliding door (CENTER), DR + FAST
|-
|453||[[EDGE]]||Sliding door (CENTER), D1
|-
|454||[[EDGE]]||Enable Tagged RTS - W1 MONSTER
|-
|455||[[EDGE]]||Enable Tagged RTS - WR MONSTER
|-
|456||[[EDGE]]||Enable Tagged RTS - GR MONSTER
|-
|457||[[EDGE]]||Disable Tagged RTS - SR
|-
|458||[[EDGE]]||Disable Tagged RTS - WR
|-
|459||[[EDGE]]||Disable Tagged RTS - GR
|-
|460||[[EDGE]]||Disable Tagged RTS - WR MONSTER
|-
|461||[[EDGE]]||Disable Tagged RTS - GR MONSTER
|-
|462||[[EDGE]]||Mirror (Plain)
|-
|463||[[EDGE]]||Mirror (White)
|-
|464||[[EDGE]]||Mirror (Blue)
|-
|465||[[EDGE]]||Mirror (Red)
|-
|466||[[EDGE]]||Mirror (Green)
|-
|470||[[EDGE]]||Ladder,  48 units high
|-
|471||[[EDGE]]||Ladder,  80 units high
|-
|472||[[EDGE]]||Ladder, 120 units high
|-
|473||[[EDGE]]||Ladder, 160 units high
|-
|474||[[EDGE]]||Ladder, 192 units high
|-
|475||[[EDGE]]||Ladder, 256 units high
|-
|476||[[EDGE]]||Ladder, 384 units high
|-
|477||[[EDGE]]||Ladder, 512 units high
|-
|478||[[EDGE]]||Ladder, 768 units high
|-
|479||[[EDGE]]||Ladder, no limit
|-
|480||[[EDGE]]||Portal (Dark  50%)
|-
|481||[[EDGE]]||Portal (Light 30%)
|-
|482||[[EDGE]]||Portal (Light 70%)
|-
|483||[[EDGE]]||Portal (Blue  70%)
|-
|484||[[EDGE]]||Portal (Green 70%)
|-
|485||[[EDGE]]||Camera Portal (Plain)
|-
|486||[[EDGE]]||Camera Portal (White)
|-
|487||[[EDGE]]||Camera Portal (Cyan)
|-
|488||[[EDGE]]||Camera Portal (Rusty)
|-
|489||[[EDGE]]||Camera Portal (Green)
|-
|490||[[EDGE]]||Green Key DOOR - DR
|-
|491||[[EDGE]]||Green Key DOOR - D1
|-
|492||[[EDGE]]||Green Key DOOR - SR
|-
|493||[[EDGE]]||Green Key DOOR - S1
|-
|494||[[EDGE]]||Green Key BLAZING DOOR - D1
|-
|501||[[EDGE]]||Hub Exit to MAP01 / E1M1
|-
|502||[[EDGE]]||Hub Exit to MAP02 / E1M2
|-
|503||[[EDGE]]||Hub Exit to MAP03 / E1M3
|-
|504||[[EDGE]]||Hub Exit to MAP04 / E1M4
|-
|505||[[EDGE]]||Hub Exit to MAP05 / E1M5
|-
|506||[[EDGE]]||Hub Exit to MAP06 / E1M6
|-
|507||[[EDGE]]||Hub Exit to MAP07 / E1M7
|-
|508||[[EDGE]]||Hub Exit to MAP08 / E1M8
|-
|509||[[EDGE]]||Hub Exit to MAP09 / E1M9
|-
|510||[[EDGE]]||Hub Exit to MAP10
|-
|511||[[EDGE]]||Hub Exit to MAP11 / E2M1
|-
|512||[[EDGE]]||Hub Exit to MAP12 / E2M2
|-
|513||[[EDGE]]||Hub Exit to MAP13 / E2M3
|-
|514||[[EDGE]]||Hub Exit to MAP14 / E2M4
|-
|515||[[EDGE]]||Hub Exit to MAP15 / E2M5
|-
|516||[[EDGE]]||Hub Exit to MAP16 / E2M6
|-
|517||[[EDGE]]||Hub Exit to MAP17 / E2M7
|-
|518||[[EDGE]]||Hub Exit to MAP18 / E2M8
|-
|519||[[EDGE]]||Hub Exit to MAP19 / E2M9
|-
|520||[[EDGE]]||Hub Exit to MAP20
|-
|521||[[EDGE]]||Hub Exit to MAP21 / E3M1
|-
|522||[[EDGE]]||Hub Exit to MAP22 / E3M2
|-
|523||[[EDGE]]||Hub Exit to MAP23 / E3M3
|-
|524||[[EDGE]]||Hub Exit to MAP24 / E3M4
|-
|525||[[EDGE]]||Hub Exit to MAP25 / E3M5
|-
|526||[[EDGE]]||Hub Exit to MAP26 / E3M6
|-
|527||[[EDGE]]||Hub Exit to MAP27 / E3M7
|-
|528||[[EDGE]]||Hub Exit to MAP28 / E3M8
|-
|529||[[EDGE]]||Hub Exit to MAP29 / E3M9
|-
|530||[[EDGE]]||Hub Exit to MAP30
|-
|531||[[EDGE]]||Hub Exit to MAP31 / E4M1
|-
|532||[[EDGE]]||Hub Exit to MAP32 / E4M2
|-
|533||[[EDGE]]||Hub Exit to MAP33 / E4M3
|-
|534||[[EDGE]]||Hub Exit to MAP34 / E4M4
|-
|535||[[EDGE]]||Hub Exit to MAP35 / E4M5
|-
|536||[[EDGE]]||Hub Exit to MAP36 / E4M6
|-
|537||[[EDGE]]||Hub Exit to MAP37 / E4M7
|-
|538||[[EDGE]]||Hub Exit to MAP38 / E4M8
|-
|539||[[EDGE]]||Hub Exit to MAP39 / E4M9
|-
|567||[[EDGE]]||Detail Slope - FLOOR
|-
|568||[[EDGE]]||Detail Slope - CEILING
|-
|569||[[EDGE]]||Detail Slope - FLOOR+CEILING
|-
|580||[[EDGE]]||Gold Key DOOR - DR
|-
|581||[[EDGE]]||Gold Key DOOR - D1
|-
|582||[[EDGE]]||Gold Key DOOR - SR
|-
|583||[[EDGE]]||Gold Key DOOR - S1
|-
|584||[[EDGE]]||Silver Key DOOR - DR
|-
|585||[[EDGE]]||Silver Key DOOR - D1
|-
|586||[[EDGE]]||Silver Key DOOR - SR
|-
|587||[[EDGE]]||Silver Key DOOR - S1
|-
|588||[[EDGE]]||Brass Key DOOR - DR
|-
|589||[[EDGE]]||Brass Key DOOR - D1
|-
|590||[[EDGE]]||Copper Key DOOR - DR
|-
|591||[[EDGE]]||Copper Key DOOR - D1
|-
|592||[[EDGE]]||Steel Key DOOR - DR
|-
|593||[[EDGE]]||Steel Key DOOR - D1
|-
|594||[[EDGE]]||Wooden Key DOOR - DR
|-
|595||[[EDGE]]||Wooden Key DOOR - D1
|-
|596||[[EDGE]]||Fire Key DOOR - DR
|-
|597||[[EDGE]]||Fire Key DOOR - D1
|-
|598||[[EDGE]]||Water Key DOOR - DR
|-
|599||[[EDGE]]||Water Key DOOR - D1
|-
|800||[[EDGE]]||Align and rotate front sector's FLOOR
|-
|801||[[EDGE]]||Align and rotate back  sector's FLOOR
|-
|802||[[EDGE]]||Align and rotate front sector's CEILING
|-
|803||[[EDGE]]||Align and rotate back  sector's CEILING
|-
|804||[[EDGE]]||Align and rotate front sector's FLOOR+CEILING
|-
|805||[[EDGE]]||Align and rotate back  sector's FLOOR+CEILING
|-
|810||[[EDGE]]||Align, scale and rotate front sector's FLOOR
|-
|811||[[EDGE]]||Align, scale and rotate back  sector's FLOOR
|-
|812||[[EDGE]]||Align, scale and rotate front sector's CEILING
|-
|813||[[EDGE]]||Align, scale and rotate back  sector's CEILING
|-
|814||[[EDGE]]||Align, scale and rotate front sector's FLOOR+CEILING
|-
|815||[[EDGE]]||Align, scale and rotate back  sector's FLOOR+CEILING
|-
|820||[[EDGE]]||Scale front sector's FLOOR
|-
|821||[[EDGE]]||Scale back  sector's FLOOR
|-
|822||[[EDGE]]||Scale front sector's CEILING
|-
|823||[[EDGE]]||Scale back  sector's CEILING
|-
|824||[[EDGE]]||Scale front sector's FLOOR+CEILING
|-
|825||[[EDGE]]||Scale back  sector's FLOOR+CEILING
|}

===Differences between games===
Line types originating from Doom (type 1&mdash;98 and 101&mdash;104) are part of the codebase that went into Heretic and Strife. However, there have been changes made which result in different behavior in these shared types. The first version of Final Doom has a minor change that was reverted in a later build.

====Doom below version 1.25====
The code specifying which sector to copy the data from was modified in version 1.25 for certain linedef specials, which resulted in an impact on the floors that descend into a blood pool in [[E3M1: Hell Keep (Doom)|E3M1: Hell Keep]].

====Doom below version 1.4====
Player and monster projectiles can trigger linedef types that can be triggered by monsters. From this version on only the new projectiles added in [[Doom 2]] can trigger such linedef specials.

====Final Doom====
Teleporter lines behave slightly different in the first released build of this game. The height is not reset when teleporting, leading to drops from above if the destination is below the origination sector. This is fixed in the updated release.

====Heretic====
The game supports the linedef types 1&ndash;98 and 101&ndash;104 from Doom, with a few changes. Linedef types 99, 100, and 105&ndash;107 have different actions in Heretic. There is only one type of keys, with either a blue, green, or yellow color.
* Type 4, 39, and 97 can be activated by all monsters and projectiles since there are no exceptions as found in later versions of Doom.
* Type 7 and 8 raising stairs move four times faster.
* Type 10 and 88 lifts cannot be activated by monsters.
* Type 49 crusher does not move back and forth.
* Type 70, 71, 98 floors lower always adjust the height to 8 above highest adjacent floor in Heretic, but in Doom only adjust if the adjacent floors are lower than the starting height.
* Type 99 scrolls a texture to the right. Doom only had left-scrolling.
* Type 100 WR, fast open door (closes after 6 seconds).
* Type 105 W1, exit to secret level, this one is type 124 in Doom.
* Type 106 W1, raise stairs with 16 unit steps, same speed as 7 and 8.
* Type 107 S1, raise stairs with 16 unit steps, same speed as 7 and 8.

====Hexen====
In Hexen, linedef actions and triggers are independent of one another, instead of being hard-coded like [[Map format|Doom-format]] maps. Linedef types can be set directly on linedefs, or indirectly via [[ACS]] scripts.

====Strife====
Contains line types from Doom II up to type 141. Locked doors use different [[key]]s and there are also many more key types.
* Type 6 crusher is twice as fast.
* Type 11 exit can be parameterized to an arbitrary level by using the line's sector tag.
* Type 25, 73 crushers deal no damage.
* Type 31 door can be used by monsters.
* Type 32, 33, 34 locked doors cannot be used by monsters, even once unlocked.
* Type 36 floor movement does not make the sector "stick out" by eight units.
* Type 44, 72 lowering ceilings deal damage.
* Type 49 crusher deals no damage.
* Type 51, 124 exits end the game instead of being a secret exit.
* Type 52 exit can be parameterized to an arbitrary level by using the line's sector tag x100.
* Type 58, 93 floors raise by 64 instead of 24.
* Type 70, 71, 98 the floor always lower to be flush with the highest adjacent floor, without an 8 unit difference.
* Type 77 crusher is twice as fast.
* Type 134, 136 locked doors do not stay open.

====Others====
The [[Chex Quest]] series and [[Hacx]] make no changes to the game engine itself, only graphical and (in the case of Hacx) behavioral changes.

==Terminology==
In Boom (like Doom), actions are caused to happen through linedef types. Boom has three kinds of linedef types:

* ''Regular'' - the linedef types that were already in Doom II v1.9
* ''Extended'' - linedef types not in Doom II v1.9 but less than 8192 in value
* ''Generalized'' - linedef types over 8192 in value that contain bit fields that independently control the actions of the sector affected.

A linedef with a non-zero linedef type is called a linedef trigger. A linedef trigger is always activated in one of three ways - pushing on the first sidedef of the linedef, walking over the linedef, or shooting the linedef with an [[impact weapon]].

Linedefs activated by pushing on them come in two varieties. A manual linedef affects the [[sector]] on the second sidedef of the line pushed. A switched linedef affects all sectors that have the same tag field as the linedef that was pushed.

Nearly all switched, walkover, and gun linedefs operate on the sectors with the same tag as that in the tag field of the linedef.

Some linedefs are never activated per se, but simply create or control an effect through their existence and properties, usually affecting the  sectors sharing the linedef's tags. There are also a few special cases like line-line teleporters and exit linedefs that do not affect sectors.

Some linedefs are only triggerable once, others are triggerable as many times as you like.

Triggering types are denoted by the letters P, S, W, and G for manual (push), switched, walkover, and gun. Their retriggerability is denoted by a 1 or R following the letter. So the triggering types for linedefs are:

P1 PR S1 SR W1 WR G1 GR

:You will sometimes see triggering types D1 and DR mentioned. This is just different notation for the P1 and PR triggering types. The D stands for "door", which makes sense for the regular Doom types, but P (for "push") is more general&mdash;the Boom generalized types can be used to construct "manual" floors, ceilings, lifts, stairs and crushers in addition to doors.

Often linedef actions depend on values in neighboring sectors. A neighboring sector is one that shares a linedef in common, just sharing a vertex is not sufficient.

In Doom only one action on a sector could occur at a time. Boom supports one floor action, one ceiling action, and one lighting action simultaneously. Many Boom-supporting [[source port]]s also make this change.

==Doors==
A [[door]] is a sector, usually placed between two rooms, whose ceiling
raises to open, and lowers to close. 

A door is fully closed when its ceiling height is equal to its floor
height. 

A door is fully open when its ceiling height is 4 less than the lowest
neighbor ceiling adjacent to it. 

A door may be set to an intermediate state initially, or thru the action
of a linedef trigger that affects ceilings or floors. The door is passable
to a player when its ceiling is at least 56 units higher than its floor.
In general the door is passable to a monster or a thing when its ceiling
is at least the monster or thing's height above the floor.

If a door has a ceiling height ABOVE the fully open height, then an
open door action moves the ceiling to the fully open height
instantly.

If a door has a ceiling height BELOW the fully closed height (that is
the ceiling of the door sector is lower than the floor of the door
sector) a close door action moves the ceiling to the fully closed
height instantly.

===Door functions===
*Open, Wait, Then Close - On activation, door opens fully, waits a specified period, then closes fully.

*Open and Stay Open - On activation, door opens fully and remains there.

*Close and Stay Closed - On activation, door closes fully, and remains there.

*Close, Wait, Then Open - On activation, door closes fully, waits a specified period, then opens fully.

===Varieties of doors===
A door can be triggered by pushing on it, walking over or pressing a
linedef trigger tagged to it, or shooting a linedef tagged to it.
These are called manual, walkover, switched, or gun doors resp.

Since a push door (P1/PR) has no use for its tag, Boom has extended
the functionality to include changing any tagged sectors to maximum
neighbor lighting on fully opening, then to minimum neighbor lighting
on fully closing. This is true for regular, extended, and generalized
doors with push triggers.

A door trigger can be locked. This means that the door function will only
operate if the player is in possession of the right key(s). Regular
and extended door triggers only care if the player has a key of the
right color, they do not care which. Generalized door triggers
can distinguish between skull and card keys, and can also require
any key, or all keys in order to activate.

A door can have different speeds, slow, normal, fast or turbo.

A door can wait for different amounts of time.

A door may or may not be activatable by monsters.

Any door function except Close and Stay Closed, when closing and
encountering a monster or player's head will bounce harmlessly off
that head and return to fully open. A Close and Stay Closed will rest
on the head until it leaves the door sector.

===Door linedef types===
;Regular and extended door types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Lock
! Speed
! Wait
! Monst
! Function
|-
| 1
| Reg
| PR
| No
| Slow
| 4s
| Yes
| Open, Wait, Then Close
|-
| 117
| Reg
| PR
| No
| Fast
| 4s
| No
| Open, Wait, Then Close
|-
| 63
| Reg
| SR
| No
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 114
| Reg
| SR
| No
| Fast
| 4s
| No
| Open, Wait, Then Close
|-
| 29
| Reg
| S1
| No
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 111
| Reg
| S1
| No
| Fast
| 4s
| No
| Open, Wait, Then Close
|-
| 90
| Reg
| WR
| No
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 105
| Reg
| WR
| No
| Fast
| 4s
| No
| Open, Wait, Then Close
|-
| 4
| Reg
| W1
| No
| Slow
| 4s
| Yes
| Open, Wait, Then Close
|-
| 108
| Reg
| W1
| No
| Fast
| 4s
| No
| Open, Wait, Then Close
|-
| 31
| Reg
| P1
| No
| Slow
| --
| No
| Open and Stay Open
|-
| 118
| Reg
| P1
| No
| Fast
| --
| No
| Open and Stay Open
|-
| 61
| Reg
| SR
| No
| Slow
| --
| No
| Open and Stay Open
|-
| 115
| Reg
| SR
| No
| Fast
| --
| No
| Open and Stay Open
|-
| 103
| Reg
| S1
| No
| Slow
| --
| No
| Open and Stay Open
|-
| 112
| Reg
| S1
| No
| Fast
| --
| No
| Open and Stay Open
|-
| 86
| Reg
| WR
| No
| Slow
| --
| No
| Open and Stay Open
|-
| 106
| Reg
| WR
| No
| Fast
| --
| No
| Open and Stay Open
|-
| 2
| Reg
| W1
| No
| Slow
| --
| No
| Open and Stay Open
|-
| 109
| Reg
| W1
| No
| Fast
| --
| No
| Open and Stay Open
|-
| 46
| Reg
| GR
| No
| Slow
| --
| Yes
| Open and Stay Open
|-
| 42
| Reg
| SR
| No
| Slow
| --
| No
| Close and Stay Closed
|-
| 116
| Reg
| SR
| No
| Fast
| --
| No
| Close and Stay Closed
|-
| 50
| Reg
| S1
| No
| Slow
| --
| No
| Close and Stay Closed
|-
| 113
| Reg
| S1
| No
| Fast
| --
| No
| Close and Stay Closed
|-
| 75
| Reg
| WR
| No
| Slow
| --
| No
| Close and Stay Closed
|-
| 107
| Reg
| WR
| No
| Fast
| --
| No
| Close and Stay Closed
|-
| 3
| Reg
| W1
| No
| Slow
| --
| No
| Close and Stay Closed
|-
| 110
| Reg
| W1
| No
| Fast
| --
| No
| Close and Stay Closed
|-
| 196
| Ext
| SR
| No
| Slow
| 30s
| No
| Close, Wait, Then Open
|-
| 175
| Ext
| S1
| No
| Slow
| 30s
| No
| Close, Wait, Then Open
|-
| 76
| Reg
| WR
| No
| Slow
| 30s
| No
| Close, Wait, Then Open
|-
| 16
| Reg
| W1
| No
| Slow
| 30s
| No
| Close, Wait, Then Open
|-
|}
;Regular and extended locked door types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Lock
! Speed
! Wait
! Monst
! Function
|-
| 26
| Reg
| PR
| Blue
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 28
| Reg
| PR
| Red
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 27
| Reg
| PR
| Yell
| Slow
| 4s
| No
| Open, Wait, Then Close
|-
| 32
| Reg
| P1
| Blue
| Slow
| --
| No
| Open and Stay Open
|-
| 33
| Reg
| P1
| Red
| Slow
| --
| No
| Open and Stay Open
|-
| 34
| Reg
| P1
| Yell
| Slow
| --
| No
| Open and Stay Open
|-
| 99
| Reg
| SR
| Blue
| Fast
| --
| No
| Open and Stay Open
|-
| 134
| Reg
| SR
| Red
| Fast
| --
| No
| Open and Stay Open
|-
| 136
| Reg
| SR
| Yell
| Fast
| --
| No
| Open and Stay Open
|-
| 133
| Reg
| S1
| Blue
| Fast
| --
| No
| Open and Stay Open
|-
| 135
| Reg
| S1
| Red
| Fast
| --
| No
| Open and Stay Open
|-
| 137
| Reg
| S1
| Yell
| Fast
| --
| No
| Open and Stay Open
|-
|}

There are two generalized door linedef types, Generalized Door, and
Generalized Locked Door. The following tables show the possibilities
for each parameter, any combination of parameters is allowed:

Slow and Fast represent the same speeds as slow and fast regular doors. Normal
is twice as fast as slow, Fast is twice normal, Turbo is twice Fast.

;Generalized door types
{| {{Prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Lock
! Speed
! Wait
! Monst
! Function
|-
| 3C00H-4000H
| Gen
| P1/PR
| No
| Slow
| 1s
| Yes
| Open, Wait, Then Close
|-
|
| 
| S1/SR
|
| Normal
| 4s
| No
| Open and Stay Open
|-
|
|
| W1/WR
|
| Fast
| 9s
|
| Close and Stay Closed
|-
|
|
| G1/GR
|
| Turbo
| 30s
|
| Close, Wait, Then Open
|}

;Generalized locked door types
{| {{Prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Lock
! Speed
! Wait
! Monst
! Function
|-
| 3800H-3C00H
| Gen
| P1/PR
| Any
| Slow
| 1s
| No
| Open, Wait, Then Close
|-
| 
|
| S1/SR
| Blue
| Normal
| 4s
|
| Open and Stay Open
|-
|
|
| W1/WR
| Red
| Fast
| 9s
|
| Close and Stay Closed
|-
|
|
| G1/GR
| Yell
| Turbo
| 30s
|
| Close, Wait, Then Open
|-
|
|
|
| BlueC
|-
|
|
|
| RedC
|-
|
|
|
| YellC
|-
|
|
|
| BlueS
|-
|
|
|
| RedS
|-
|
|
|
| YellS
|-
|
|
|
| All3
|-
|
|
|
| All6
|}

==Floors==
===Floor targets===
;Lowest Neighbor Floor (LnF)

:This means that the floor moves to the height of the lowest neighboring floor including the floor itself. If the floor direction is up (only possible with  generalized floors) motion is instant, else at the floor's speed.

;Next Neighbor Floor (NnF)

:This means that the floor moves up to the height of the lowest adjacent floor greater in height than the current, or down to the height of the highest adjacent floor less in height than the current, as determined by the floor's direction. Instant motion is not possible in this case. If no such floor exists, the floor does not move.

;Lowest Neighbor Ceiling (LnC)
:This means that the floor height changes to the height of the lowest ceiling possessed by any neighboring sector, including that floor's ceiling. If the target height is in the opposite direction to floor motion, motion is instant, otherwise at the floor action's speed.

;8 Under Lowest Neighbor Ceiling (8uLnC)
:This means that the floor height changes to 8 less than the height of the lowest ceiling possessed by any neighboring sector, including that floor's ceiling. If the target height is in the opposite direction to floor motion, motion is instant, otherwise at the floor action's speed.

;Highest Neighbor Floor (HnF)
:This means that the floor height changes to the height of the highest neighboring floor, excluding the floor itself. If no neighbor floor exists, the floor moves down to -32000. If the target height is in the opposite direction to floor motion, the motion is instant, otherwise it occurs at the floor action's speed.

;8 Above Highest Neighbor Floor (8aHnF)
:This means that the floor height changes to 8 above the height of the highest neighboring floor, excluding the floor itself. If no neighbor floor exists, the floor moves down to -31992. If the target height is in the opposite direction to floor motion, the motion is instant, otherwise it occurs at the floor action's speed.

;Ceiling
:The floor moves up until it is at ceiling height, instantly if floor direction is down (only available with generalized types), at the floor speed if the direction is up.

;24 Units (24)
:The floor moves 24 units in the floor action's  direction. Instant motion is not possible with this linedef type.

;32 Units (32)
:The floor moves 32 units in the floor action's  direction. Instant motion is not possible with this linedef type.

;512 Units (512)
:The floor moves 512 units in the floor action's direction. Instant motion is not possible with this linedef type.

;Shortest Lower Texture (SLT)
:The floor moves to the height of the shortest lower texture on the boundary of the sector, in the floor direction. Instant motion is not possible with this type. In the case that there is no surrounding texture the motion is to -32000 or +32000 depending on direction.

;None
:Some pure texture type changes are provided for changing the floor texture and/or sector type without moving the floor.

===Varieties of floors===
A floor can be activated by pushing on a linedef bounding it
(generalized types only), or by pushing on a switch with the same tag
as the floor sector, or by walking over a linedef with the same tag
as the floor, or by shooting a linedef with the same tag as the
floor with an impact weapon.

A floor can move either Up or Down.

A floor can move with speeds of Slow, Normal, Fast, or Turbo. If the
target height specified by the floor function (see Floor Targets
above) is in the opposite direction to the floor's motion, then
travel is instantaneous, otherwise it happens at the speed specified.

A floor action can be a texture change type, in which case after the
action the floor texture of the affected floor, and possibly the
sector type of the affected floor are changed to those of a model
sector. The sector type may be zeroed instead of copied from the
model, or not changed at all. These change types are referred to
below as Tx (texture only), Tx0 (type zeroed), and TxTy (texture and
type changed). The model sector for the change may be the sector on
the first sidedef of the trigger (trigger model) or the sector with
floor at destination height across the lowest numbered two-sided
linedef surrounding the affected sector (numeric model). If no model
sector exists, no change occurs. If a change occurs, floor texture is
always affected, lighting is never affected, even that corresponding
to the sector's type, nor is any other sector property other than the
sector's type.

Numeric model algorithm:

#Find all floors adjacent to the tagged floor at destination height
#Find the lowest numbered linedef separating those floors from that tagged
#The sector on the other side of that linedef is the model

A floor action can have the crush property, in which case players and
monsters are crushed when the floor tries to move above the point
where they fit exactly underneath the ceiling. This means they take
damage until they die, leave the sector, or the floor action is stopped.

A floor action never reverses on encountering an obstacle, even if
the crush property is not true, the floor merely remains in the same
position until the obstacle is removed or dies, then continues.

===Floor linedef types===
;Regular and extended floor types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Chg
! Mdl
! Mon
! Crsh
! Target
|-
| 60
| Reg
| SR
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Floor
|-
| 23
| Reg
| S1
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Floor
|-
| 82
| Reg
| WR
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Floor
|-
| 38
| Reg
| W1
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Floor
|-
| 177
| Ext
| SR
| Dn
| Slow
| TxTy
| Num
| No
| No
| Lowest Neighbor Floor
|-
| 159
| Ext
| S1
| Dn
| Slow
| TxTy
| Num
| No
| No
| Lowest Neighbor Floor
|-
| 84
| Reg
| WR
| Dn
| Slow
| TxTy
| Num
| No
| No
| Lowest Neighbor Floor
|-
| 37
| Reg
| W1
| Dn
| Slow
| TxTy
| Num
| No
| No
| Lowest Neighbor Floor
|-
| 69
| Reg
| SR
| Up
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 18
| Reg
| S1
| Up
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 128
| Reg
| WR
| Up
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 119
| Reg
| W1
| Up
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 132
| Reg
| SR
| Up
| Fast
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 131
| Reg
| S1
| Up
| Fast
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 129
| Reg
| WR
| Up
| Fast
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 130
| Reg
| W1
| Up
| Fast
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 222
| Ext
| SR
| Dn
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 221
| Ext
| S1
| Dn
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 220
| Ext
| WR
| Dn
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 219
| Ext
| W1
| Dn
| Slow
| None
| --
| No
| No
| Next Neighbor Floor
|-
| 64
| Reg
| SR
| Up
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 101
| Reg
| S1
| Up
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 91
| Reg
| WR
| Up
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 5
| Reg
| W1
| Up
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 24
| Reg
| G1
| Up
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 65
| Reg
| SR
| Up
| Slow
| None
| --
| No
| Yes
| Lowest Neighbor Ceiling - 8
|-
| 55
| Reg
| S1
| Up
| Slow
| None
| --
| No
| Yes
| Lowest Neighbor Ceiling - 8
|-
| 94
| Reg
| WR
| Up
| Slow
| None
| --
| No
| Yes
| Lowest Neighbor Ceiling - 8
|-
| 56
| Reg
| W1
| Up
| Slow
| None
| --
| No
| Yes
| Lowest Neighbor Ceiling - 8
|-
| 45
| Reg
| SR
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 102
| Reg
| S1
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 83
| Reg
| WR
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 19
| Reg
| W1
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 70
| Reg
| SR
| Dn
| Fast
| None
| --
| No
| No
| Highest Neighbor Floor + 8     
|-
| 71
| Reg
| S1
| Dn
| Fast
| None
| --
| No
| No
| Highest Neighbor Floor + 8     
|-
| 98
| Reg
| WR
| Dn
| Fast
| None
| --
| No
| No
| Highest Neighbor Floor + 8     
|-
| 36
| Reg
| W1
| Dn
| Fast
| None
| --
| No
| No
| Highest Neighbor Floor + 8     
|-
| 180
| Ext
| SR
| Up
| Slow
| None
| --
| No
| No
| Absolute 24
|-
| 161
| Ext
| S1
| Up
| Slow
| None
| --
| No
| No
| Absolute 24
|-
| 92
| Reg
| WR
| Up
| Slow
| None
| --
| No
| No
| Absolute 24
|-
| 58
| Reg
| W1
| Up
| Slow
| None
| --
| No
| No
| Absolute 24
|-
| 179
| Ext
| SR
| Up
| Slow
| TxTy
| Trg
| No
| No
| Absolute 24
|-
| 160
| Ext
| S1
| Up
| Slow
| TxTy
| Trg
| No
| No
| Absolute 24
|-
| 93
| Reg
| WR
| Up
| Slow
| TxTy
| Trg
| No
| No
| Absolute 24
|-
| 59
| Reg
| W1
| Up
| Slow
| TxTy
| Trg
| No
| No
| Absolute 24
|-
| 176
| Ext
| SR
| Up
| Slow
| None
| --
| No
| No
| Abs Shortest Lower Texture
|-
| 158
| Ext
| S1
| Up
| Slow
| None
| --
| No
| No
| Abs Shortest Lower Texture
|-
| 96
| Reg
| WR
| Up
| Slow
| None
| --
| No
| No
| Abs Shortest Lower Texture
|-
| 30
| Reg
| W1
| Up
| Slow
| None
| --
| No
| No
| Abs Shortest Lower Texture
|-
| 178
| Ext
| SR
| Up
| Slow
| None
| --
| No
| No
| Absolute 512
|-
| 140
| Reg
| S1
| Up
| Slow
| None
| --
| No
| No
| Absolute 512
|-
| 147
| Ext
| WR
| Up
| Slow
| None
| --
| No
| No
| Absolute 512
|-
| 142
| Ext
| W1
| Up
| Slow
| None
| --
| No
| No
| Absolute 512
|-
| 190
| Ext
| SR
| --
| ----
| TxTy
| Trg
| No
| No
| None
|-
| 189
| Ext
| S1
| --
| ----
| TxTy
| Trg
| No
| No
| None
|-
| 154
| Ext
| WR
| --
| ----
| TxTy
| Trg
| No
| No
| None
|-
| 153
| Ext
| W1
| --
| ----
| TxTy
| Trg
| No
| No
| None
|-
| 78
| Ext
| SR
| --
| ----
| TxTy
| Num
| No
| No
| None
|-
| 241
| Ext
| S1
| --
| ----
| TxTy
| Num
| No
| No
| None
|-
| 240
| Ext
| WR
| --
| ----
| TxTy
| Num
| No
| No
| None
|-
| 239
| Ext
| W1
| --
| ----
| TxTy
| Num
| No
| No
| None
|-
|}

The following tables show the possibilities for generalized floor linedef type parameters. Any combination of parameters is allowed:

Slow and Fast represent the same speeds as slow and fast regular
floors. Normal is twice as fast as slow, Fast is twice normal, Turbo is twice Fast.

;Generalized floor types
{| {{Prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Chg&sup1;
! Mdl&sup2;
! Mon
! Crsh
! Target
|-
| 6000H-7FFFH
| Gen
| P1/PR
| Up
| Slow
| None
| Trg
| Yes
| Yes
| Lowest Neighbor Floor
|-
|
|
| S1/SR
| Dn
| Normal
| Tx
| Num
| No
| No
| Next Neighbor Floor
|-
|
|
| W1/WR
|
| Fast
| Tx0
|
|
|
| Lowest Neighbor Ceiling
|-
|
|
| G1/GR
|
| Turbo
| TxTy
|
|
|
| Highest Neighbor Floor
|-
|
|
|
|
|
|
|
|
|
| Ceiling
|-
|
|
|
|
|
|
|
|
|
| 24
|-
|
|
|
|
|
|
|
|
|
| 32
|-
|
|
|
|
|
|
|
|
|
| Shortest Lower Texture
|}

# Chg - Mon(ster) enabled must be No if Chg field is not None
#*Tx = Texture copied only
#*Tx0 = Texture copied and Type->0   
#*TxTy = Texture and Type copied
# Mdl
#*Trg = Trigger Model
#*Num = Numeric Model

==Ceilings==
===Ceiling targets===
;Highest Neighbor Ceiling (HnC)
:This means that the ceiling moves to the height of the highest neighboring ceiling NOT including the ceiling itself. If the ceiling direction is down (only possible with generalized ceilings) motion is instant, else at the ceiling's speed. If no adjacent ceiling exists the ceiling moves to -32000 units.

;Next Neighbor Ceiling (NnC)
:This means that the ceiling moves up to the height of the lowest adjacent ceiling greater in height than the current, or to the height of the highest adjacent ceiling less in height than the current, as determined by the ceiling's direction. Instant motion is not possible in this case. If no such ceiling exists, the ceiling does not move.

;Lowest Neighbor Ceiling (LnC)
:This means that the ceiling height changes to the height of the lowest ceiling possessed by any neighboring sector, NOT including itself. If the target height is in the opposite direction to ceiling motion, motion is instant, otherwise at the ceiling action's speed. If no adjacent ceiling exists the ceiling moves to 32000 units.

;Highest Neighbor Floor (HnF)
:This means that the ceiling height changes to the height of the highest neighboring floor, excluding the ceiling's floor itself. If no neighbor floor exists, the ceiling moves down to -32000 or the ceiling's floor, whichever is higher. If the target height is in the opposite direction to ceiling motion, the motion is instant, otherwise it occurs at the ceiling action's speed.

;Floor
:The ceiling moves down until its at floor height, instantly if ceiling direction is up (only available with generalized types), at the ceiling speed if the direction is down. 

;8 Above Floor (8aF)
:This means that the ceiling height changes to 8 above the height of the ceiling's floor. If the target height is in the opposite direction to ceiling motion, the motion is instant, otherwise it occurs at the ceiling action's speed.

;24 Units (24)
:The ceiling moves 24 units in the ceiling action's direction. Instant motion is not possible with this linedef type.

;32 Units (32)
:The ceiling moves 32 units in the ceiling action's direction. Instant motion is not possible with this linedef type.

;Shortest Upper Texture (SUT)
:The ceiling moves the height of the shortest upper texture on the boundary of the sector, in the ceiling direction. Instant motion is not possible with this type. In the case that there is no surrounding texture the motion is to -32000 or +32000 depending on direction.

===Varieties of ceilings===
A ceiling can be activated by pushing on a linedef bounding it
(generalized types only), or by pushing on a switch with the same tag
as the ceiling sector, or by walking over a linedef with the same tag
as the ceiling, or by shooting a linedef with the same tag as the
ceiling with an impact weapon (generalized types only).

A ceiling can move either Up or Down.

A ceiling can move with speeds of Slow, Normal, Fast, or Turbo. If the
target height specified by the ceiling function (see Ceiling Targets
above) is in the opposite direction to the ceiling's motion, then
travel is instantaneous, otherwise its at the speed specified.

A ceiling action can be a texture change type, in which case after
the action the ceiling texture of the affected ceiling, and possibly
the sector type of the affected ceiling are changed to those of a
model sector. The sector type may be zeroed instead of copied from
the model, or not changed at all. These change types are referred to
below as Tx (texture only), Tx0 (type set to 0), and TxTy (texture
and type copied from model). The model sector for the change may be
the sector on the first sidedef of the trigger (trigger model) or the
sector with ceiling at destination height across the lowest numbered
two-sided linedef surrounding the affected sector (numeric model). If
no model sector exists, no change occurs. If a change occurs, ceiling
texture is always affected, lighting is never affected, even that
corresponding to the sector's type, nor is any other sector property
other than the sector's type.

Numeric model algorithm:

# Find all ceilings adjacent to the tagged ceiling at destination height
# Find the lowest numbered linedef separating those ceilings from that tagged
# The sector on the other side of that linedef is the model

A ceiling action can have the crush property (generalized types only),
in which case players and monsters are crushed when the ceiling tries
to move below the point where they fit exactly underneath the
ceiling. This means they take damage until they die, leave the
sector, or the ceiling action is stopped.  A ceiling action never
reverses on encountering an obstacle, even if the crush property is
not true, the ceiling merely remains in the same position until the
obstacle is removed or dies, then continues.

===Ceiling linedef types===
;Regular and extended ceiling types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Chg&sup1;
! Mdl&sup2;
! Mon
! Crsh
! Target
|-
| 43
| Reg
| SR
| Dn
| Fast
| None
| --
| No
| No
| Floor 
|-
| 41
| Reg
| S1
| Dn
| Fast
| None
| --
| No
| No
| Floor 
|-
| 152
| Ext
| WR
| Dn
| Fast
| None
| --
| No
| No
| Floor 
|-
| 145
| Ext
| W1
| Dn
| Fast
| None
| --
| No
| No
| Floor 
|-
| 186
| Ext
| SR
| Up
| Slow
| None
| --
| No
| No
| Highest Neighbor Ceiling
|-
| 166
| Ext
| S1
| Up
| Slow
| None
| --
| No
| No
| Highest Neighbor Ceiling
|-
| 151
| Ext
| WR
| Up
| Slow
| None
| --
| No
| No
| Highest Neighbor Ceiling
|-
| 40
| Reg
| W1
| Up
| Slow
| None
| --
| No
| No
| Highest Neighbor Ceiling
|-
| 187
| Ext
| SR
| Dn
| Slow
| None
| --
| No
| No
| 8 Above Floor
|-
| 167
| Ext
| S1
| Dn
| Slow
| None
| --
| No
| No
| 8 Above Floor
|-
| 72
| Reg
| WR
| Dn
| Slow
| None
| --
| No
| No
| 8 Above Floor
|-
| 44
| Reg
| W1
| Dn
| Slow
| None
| --
| No
| No
| 8 Above Floor
|-
| 205
| Ext
| SR
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 203
| Ext
| S1
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 201
| Ext
| WR
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 199
| Ext
| W1
| Dn
| Slow
| None
| --
| No
| No
| Lowest Neighbor Ceiling
|-
| 206
| Ext
| SR
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 204
| Ext
| S1
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 202
| Ext
| WR
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
| 200
| Ext
| W1
| Dn
| Slow
| None
| --
| No
| No
| Highest Neighbor Floor
|-
|}
;Generalized ceiling types
{| {{prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Chg&sup1;
! Mdl&sup2;
! Mon
! Crsh
! Target
|-
| 4000H-5FFFH
| Gen
| P1/PR
| Up
| Slow
| None
| Trg
| Yes
| Yes
| Highest Neighbor Ceiling
|-
| 
|
| S1/SR
| Dn
| Normal
| Tx
| Num
| No
| No
| Next Neighbor Ceiling
|-
|
|
| W1/WR
|
| Fast
| Tx0
|
|
|
| Lowest Neighbor Ceiling
|-
|
|
| G1/GR
|
| Turbo
| TxTy
|
|
|
| Highest Neighbor Floor
|-
|
|
|
|
|
|
|
|
|
| Floor
|-
|
|
|
|
|
|
|
|
|
| 24
|-
|
|
|
|
|
|
|
|
|
| 32
|-
|
|
|
|
|
|
|
|
|
| Shortest Upper Texture
|}

# Chg - Mon(ster) enabled must be No if Chg field is not None
#* Tx = Texture copied only           
#* Tx0 = Texture copied and Type->0   
#* TxTy = Texture and Type copied
# Mdl
#* Trg = Trigger Model
#* Num = Numeric Model

==Platforms (lifts)==
A platform is basically a floor action involving two heights. The
simple raise platform actions, for example, differ from the
corresponding floor actions in that if they encounter an obstacle,
they reverse direction and return to their former height.

The most often used kind of platform is a lift which travels from its
current height to the target height, then waits a specified time and
returns to it former height.

===Platform targets===
;Lowest Neighbor Floor
:This means that the platforms "low" height is the height of the lowest surrounding floor, including the platform itself. The "high" height is the original height of the floor.

;Next Lowest Neighbor Floor
:This means that the platforms "low" height is the height of the highest surrounding floor lower than the floor itself. If no lower floor exists, no motion occurs as the "low" and "high" heights are then both equal to the floors current height.

;Lowest Neighbor Ceiling
:This means that the platforms "low" height is the height of the lowest surrounding ceiling unless this is higher than the floor itself. If no adjacent ceiling exists, or is higher than the floor no motion occurs as the "low" and "high" heights are then both equal to the floors current height.

;Lowest and Highest Floor
:This target sets the "low" height to the lowest neighboring floor, including the floor itself, and the "high" height to the highest neighboring floor, including the floor itself. When this target is used the floor moves perpetually between the two heights. Once triggered this type of linedef runs permanently, even if  the motion is temporarily suspended with a Stop type. No other floor action can be commanded on the sector after this type is begun.

;Ceiling
:This target sets the "high" height to the ceiling of the sector and the "low" height to the floor height of the sector and is only used in the instant toggle type that switches the floor between the ceiling and its original height on each activation. This is also the ONLY instant platform type.

;Raise Next Floor
:This means that the "high" height is the lowest surrounding floor higher than the platform. If no higher adjacent floor exists no motion will occur.

;Raise 24 Units
:The "low" height is the original floor height, the "high"  height is 24 more. 

;Raise 32 Units
:The "low" height is the original floor height, the "high" height is 32 more. 

===Varieties of platforms===
A platform can be activated by pushing on a linedef bounding it
(generalized types only), or by pushing on a switch with the same tag
as the platform sector, or by walking over a linedef with the same tag
as the platform, or by shooting a linedef with the same tag as the
platform with an impact weapon.

A platform can move with speeds of Slow, Normal, Fast, or Turbo. 
Only the instant toggle platform moves instantly, all others move at
the platform's speed.

A platform can have a delay, in between when it reaches "high" height
and returns to "low" height, or at both ends of the motion in the
case of perpetual lifts.

A platform action can be a texture change type, in which case after
the action the floor texture of the affected floor, and possibly the
sector type of the affected floor are changed to those of a model
sector. The sector type may be zeroed instead of copied from the
model, or not changed at all. These change types are referred to
below as Tx (texture only), Tx0 (type zeroed), and TxTy (texture and
type changed). The model sector for the change is always the sector
on the first sidedef of the trigger (trigger model).  If a change
occurs, floor texture is always affected, lighting is never affected,
even that corresponding to the sector's type, nor is any other sector
property other than the sector's type.

===Platform linedef types===
;Regular and extended platform types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dly
! Spd
! Chg
! Mdl
! Mon
! Target
|-
| 66
| Reg
| SR
| --
| Slow
| Tx
| Trg
| No
| Raise 24 Units
|-
| 15
| Reg
| S1
| --
| Slow
| Tx
| Trg
| No
| Raise 24 Units
|-
| 148
| Ext
| WR
| --
| Slow
| Tx
| Trg
| No
| Raise 24 Units
|-
| 143
| Ext
| W1
| --
| Slow
| Tx
| Trg
| No
| Raise 24 Units
|-
| 67
| Reg
| SR
| --
| Slow
| Tx0
| Trg
| No
| Raise 32 Units
|-
| 14
| Reg
| S1
| --
| Slow
| Tx0
| Trg
| No
| Raise 32 Units
|-
| 149
| Ext
| WR
| --
| Slow
| Tx0
| Trg
| No
| Raise 32 Units
|-
| 144
| Ext
| W1
| --
| Slow
| Tx0
| Trg
| No
| Raise 32 Units
|-
| 68
| Reg
| SR
| --
| Slow
| Tx0
| Trg
| No
| Raise Next Floor
|-
| 20
| Reg
| S1
| --
| Slow
| Tx0
| Trg
| No
| Raise Next Floor
|-
| 95
| Reg
| WR
| --
| Slow
| Tx0
| Trg
| No
| Raise Next Floor
|-
| 22
| Reg
| W1
| --
| Slow
| Tx0
| Trg
| No
| Raise Next Floor
|-
| 47
| Reg
| G1
| --
| Slow
| Tx0
| Trg
| No
| Raise Next Floor
|-
| 181
| Ext
| SR
| 3s
| Slow
| None
| --
| No
| Lowest and Highest Floor (perpetual)
|-
| 162
| Ext
| S1
| 3s
| Slow
| None
| --
| No
| Lowest and Highest Floor (perpetual)
|-
| 87
| Reg
| WR
| 3s
| Slow
| None
| --
| No
| Lowest and Highest Floor (perpetual)
|-
| 53
| Reg
| W1
| 3s
| Slow
| None
| --
| No
| Lowest and Highest Floor (perpetual)
|-
| 182
| Ext
| SR
| --
| ----
| ----
| --
| --
| Stop
|-
| 163
| Ext
| S1
| --
| ----
| ----
| --
| --
| Stop
|-
| 89
| Reg
| WR
| --
| ----
| ----
| --
| --
| Stop
|-
| 54
| Reg
| W1
| --
| ----
| ----
| --
| --
| Stop
|-
| 62
| Reg
| SR
| 3s
| Slow
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 21
| Reg
| S1
| 3s
| Slow
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 88
| Reg
| WR
| 3s
| Slow
| None
| --
| Yes
| Lowest Neighbor Floor (lift)
|-
| 10
| Reg
| W1
| 3s
| Slow
| None
| --
| Yes
| Lowest Neighbor Floor (lift)
|-
| 123
| Reg
| SR
| 3s
| Fast
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 122
| Reg
| S1
| 3s
| Fast
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 120
| Reg
| WR
| 3s
| Fast
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 121
| Reg
| W1
| 3s
| Fast
| None
| --
| No
| Lowest Neighbor Floor (lift)
|-
| 211
| Ext
| SR
| --
| Inst
| None
| --
| No
| Ceiling (toggle)
|-
| 212
| Ext
| WR
| --
| Inst
| None
| --
| No
| Ceiling (toggle)
|-
|}
;Generalized platform types
{| {{prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dly
! Spd
! Mon
! Target
|-
| 3400H-37FFH
| Gen
| P1/PR
| 1s
| Slow
| Yes
| Lowest Neighbor Floor
|-
| 
|
| S1/SR
| 3s
| Normal
| No
| Next Lowest Neighbor Floor
|-
|
|
| W1/WR
| 5s
| Fast
|
| Lowest Neighbor Ceiling
|-
|
|
| G1/GR
| 10s
| Turbo
|
| Lowest and Highest Floor (perpetual)
|}

==Crusher ceilings==
A [[crusher ceiling]] is a linedef type that causes the ceiling to cycle
between its starting height and 8 above the floor, damaging
[[monsters]] and [[player]]s that happen to be in-between. [[Barrel]]s explode
when crushed.

Once a crusher ceiling is started it remains running for the
remainder of the level even if temporarily suspended with a stop type.
No other ceiling action can be used in that [[sector]] thereafter.

===Varieties of crushers===
A crusher can be activated by pushing on a linedef bounding it
(generalized types only), or by pushing on a switch with the same tag
as the crusher sector, or by walking over a linedef with the same tag
as the crusher, or by shooting a linedef with the same tag as the
crusher with an impact weapon (generalized types only).

A crusher has a speed: slow, normal, fast, or turbo. The slower the
speed, the more damage the crusher does when crushing, simply through
being applied longer. When a slow or normal crusher is moving down
and encounters something to crush, it slows down even more, by a
factor of 8. This persists until it reaches bottom of its stroke and
starts upward again. Fast and turbo crushers do not slow down.

A crusher can be silent. The regular silent crusher makes platform
stop and start noises at the top and bottom of its stroke. The generalized
silent crusher is completely quiet.

A crusher linedef is provided to stop a crusher in its current
position. Care should be taken that this does not lock the player out
of an area of the level if the crusher is too low to pass under. A crusher
can be restarted, but not changed, with any crusher-start linedef.

===Crusher linedef types===
;Regular and extended crusher types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Spd
! Mon
! Silent
! Action
|-
| 184
| Ext
| SR
| Slow
| No
| No
| Start
|-
| 49
| Reg
| S1
| Slow
| No
| No
| Start
|-
| 73
| Reg
| WR
| Slow
| No
| No
| Start
|-
| 25
| Reg
| W1
| Slow
| No
| No
| Start
|-
| 183
| Ext
| SR
| Fast
| No
| No
| Start
|-
| 164
| Ext
| S1
| Fast
| No
| No
| Start
|-
| 77
| Reg
| WR
| Fast
| No
| No
| Start
|-
| 6
| Reg
| W1
| Fast
| No
| No
| Start
|-
| 185
| Ext
| SR
| Slow
| No
| Yes
| Start
|-
| 165
| Ext
| S1
| Slow
| No
| Yes
| Start
|-
| 150
| Ext
| WR
| Slow
| No
| Yes
| Start
|-
| 141
| Reg
| W1
| Slow
| No
| Yes
| Start
|-
| 188
| Ext
| SR
| ----
| --
| --
| Stop
|-
| 168
| Ext
| S1
| ----
| --
| --
| Stop
|-
| 74
| Reg
| WR
| ----
| --
| --
| Stop
|-
| 57
| Reg
| W1
| ----
| --
| --
| Stop
|-
|}
;Generalized crusher types
{| {{prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Spd
! Mon
! Silent
|-
| 2F80H-2FFFH
| Gen
| P1/PR
| Slow
| Yes
| Yes
|-
| 
|
| S1/SR
| Normal
| No
| No
|-
|
|
| W1/WR
| Fast
|-
|
|
| G1/GR
| Turbo
|}

==Stair builders==
A stair builder is a linedef type that sets a sequence of sectors
defined by a complex rule to an ascending or descending sequence of
heights.

The rule for stair building is as follows:

# The first step to rise or fall is the tagged sector. It rises or falls by the stair stepsize, at the stair speed, in the stair direction.
# To find the next step (sector) affected examine each two-sided linedef with first sidedef facing into the previous step in numerical order. For each such linedef if the sector on the other side is already active, or has already risen from this stair, the linedef is skipped. If textures are not ignored then any linedef with a different floor texture on its second side is also skipped. The next step to rise is the sector on the other side of the first linedef not skipped. If none exists, stair building ceases. <p> The next step moves to the height of the previous step plus or minus the stepsize depending on the direction the stairs build, up or down.  If the motion is in the same direction as the stairs build, it occurs at stair build speed, otherwise it is instant.
# Repeat step 2 until stair building ceases.

===Varieties of stair builders===
A stair can be activated by pushing on a linedef bounding it
(generalized types only), or by pushing on a switch with the same tag
as the stair sector, or by walking over a linedef with the same tag
as the stair, or by shooting a linedef with the same tag as the
stair with an impact weapon (generalized types only).

Only extended and generalized stair types are retriggerable. The
extended retriggerable stairs are mostly useless, though triggering a
stair with stepsize 8 twice might be used. The generalized
retriggerable stairs alternate building up and down on each
activation which is much more useful.

A stair can build up or down (generalized types only).

A stair can have a step size of 4, 8, 16, or 24. Only generalized
types support stepsize of 4 or 24.

A stair can have build speeds of slow, normal, fast or turbo. Only
generalized types support speeds of normal or turbo.

A stair can stop on encountering a different texture or ignore
(generalized types only) different textures and continue.

Only the regular build fast, stepsize 16 stair has the property that
monsters and players can be crushed by the motion, all others do not
crush.

===Stair builder linedef types===
;Regular and extended stairs types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Step
! Ignore
! Mon
|-
| 258
| Ext
| SR
| Up
| Slow
| 8
| No
| No
|-
| 7
| Reg
| S1
| Up
| Slow
| 8
| No
| No
|-
| 256
| Ext
| WR
| Up
| Slow
| 8
| No
| No
|-
| 8
| Reg
| W1
| Up
| Slow
| 8
| No
| No
|-
| 259
| Ext
| SR
| Up
| Fast
| 16
| No
| No
|-
| 127
| Reg
| S1
| Up
| Fast
| 16
| No
| No
|-
| 257
| Ext
| WR
| Up
| Fast
| 16
| No
| No
|-
| 100
| Reg
| W1
| Up
| Fast
| 16
| No
| No
|-
|}
;Generalized stairs types
{| {{prettytable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Dir
! Spd
! Step
! Ignore
! Mon
|-
| 3000H-33FFH
| Gen
| P1/PR
| Up
| Slow
| 4
| Yes
| Yes
|-
|
| 
| S1/SR
| Dn
| Normal
| 8
| No
| No
|-
|
|
| W1/WR
|
| Fast
| 16
|-
|
|
| G1/GR
|
| Turbo
| 24
|}

==Elevators==
An elevator is a linedef type that moves both floor and ceiling
together. All elevator linedefs are extended, there are no regular or
generalized elevator types. Instant elevator motion is not possible,
and monsters cannot activate elevators. All elevator triggers are
either switched or walkover.

===Elevator targets===
;Next Highest Floor
:The elevator floor moves to the lowest adjacent floor higher than the elevator's floor, the ceiling staying the same height above the floor.  If there is no higher floor the elevator does not move.

;Next Lowest Floor
:The elevator floor moves to the highest adjacent floor lower than the current floor, the ceiling staying the same height above the floor. If there is no lower floor the elevator does not move.

;Current Floor
:The elevator floor moves to the height of the floor on the first sidedef of the triggering line, the ceiling remaining the same height above the elevator floor.

===Elevator linedef types===
;Extended elevator types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Spd
! Target
|-
| 230
| Ext
| SR
| Fast
| Next Highest Floor
|-
| 229
| Ext
| S1
| Fast
| Next Highest Floor
|-
| 228
| Ext
| WR
| Fast
| Next Highest Floor
|-
| 227
| Ext
| W1
| Fast
| Next Highest Floor
|-
| 234
| Ext
| SR
| Fast
| Next Lowest Floor
|-
| 233
| Ext
| S1
| Fast
| Next Lowest Floor
|-
| 232
| Ext
| WR
| Fast
| Next Lowest Floor
|-
| 231
| Ext
| W1
| Fast
| Next Lowest Floor
|-
| 238
| Ext
| SR
| Fast
| Current Floor
|-
| 237
| Ext
| S1
| Fast
| Current Floor
|-
| 236
| Ext
| WR
| Fast
| Current Floor
|-
| 235
| Ext
| W1
| Fast
| Current Floor
|-
|}

==Lighting==
The lighting linedef types change the lighting in the tagged sector.
All are regular or extended types, there are no generalized lighting
types. All are switched or walkovers.

===Lighting targets===
;Lights to Minimum Neighbor
:Each tagged sector is set to the minimum light level found in any adjacent sector. The tagged sectors are changed in numerical order,  and this may influence the result.

;Lights to Maximum Neighbor
:Each tagged sector is set to the maximum light level found in any adjacent sector. The tagged sectors are changed in numerical order,  and this may influence the result.

;Blinking
:Each tagged sector begins blinking between two light levels. The brighter level is the light level in the tagged sector. The darker level is the minimum neighbor light level, or 0 if all neighbor sectors have lighting greater than or equal to the sector's at the time of activation. The blinking is non-synchronous, beginning 1-9 gametics after activation, with a dark period of 1 sec (35 gametics) and a bright period of 1/7 sec (5 gametics).

;35 Units
:Each tagged sector is set to a light level of 35 units.

;255 Units
:Each tagged sector is set to a light level of 255 units.

===Lighting linedef types===
;Regular and extended lighting types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Target
|-
| 139
| Reg
| SR
| 35 Units
|-
| 170
| Ext
| S1
| 35 Units
|-
| 79
| Reg
| WR
| 35 Units
|-
| 35
| Reg
| W1
| 35 Units
|-
| 138
| Reg
| SR
| 255 Units
|-
| 171
| Ext
| S1
| 255 Units
|-
| 81
| Reg
| WR
| 255 Units
|-
| 13
| Reg
| W1
| 255 Units
|-
| 192
| Ext
| SR
| Maximum Neighbor
|-
| 169
| Ext
| S1
| Maximum Neighbor
|-
| 80
| Reg
| WR
| Maximum Neighbor
|-
| 12
| Reg
| W1
| Maximum Neighbor
|-
| 194
| Ext
| SR
| Minimum Neighbor
|-
| 173
| Ext
| S1
| Minimum Neighbor
|-
| 157
| Ext
| WR
| Minimum Neighbor
|-
| 104
| Reg
| W1
| Minimum Neighbor
|-
| 193
| Ext
| SR
| Blinking
|-
| 172
| Ext
| S1
| Blinking
|-
| 156
| Ext
| WR
| Blinking
|-
| 17
| Reg
| W1
| Blinking
|-
|}

==Exits==
An exit linedef type ends the current level, bringing up the
[[intermission screen]] with its report of kills/items/secrets (or frags
in the case of [[deathmatch]]). Obviously, none are retriggerable, and
none require tags, since no sector is affected.

===Exit varieties===
An exit can be activated by pushing on a switch with the exit type
or  by walking over a linedef with the exit type, or by shooting a 
linedef with the exit type with an impact weapon.

An exit can be ''normal'' or ''secret''. The normal exit simply ends the level and takes the player to the next level via the intermission screen. The secret exit only works on certain levels depending on the IWAD being played:

* In Doom/Ultimate Doom, a secret exit on any level leads to the secret level for that episode, but a normal exit on that level always returns the player to the "next" level (E1M4, E2M6, E3M7, or E4M3 respectively). This can be exploited as a special effect in PWADs, causing the player to skip or repeat levels.
* In Doom II, a secret exit can lead from MAP15 to MAP31 or from MAP31 to MAP32. If a secret exit is used in any other level, it instead resets the current level, unless the player entered the current level via <tt>-warp</tt> or <tt>idclev</tt>, in which case he is taken to MAP01. [http://www.doomworld.com/vb/doom-editing/42392-go-to-secret-exit-linedef/] A normal exit from MAP31 or MAP32 goes to MAP16.

===Exit linedef types===
;Regular and extended exit types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Type
|-
| 11
| Reg
| S1
| Normal
|-
| 52
| Reg
| W1
| Normal
|-
| 197
| Ext
| G1
| Normal
|-
| 51
| Reg
| S1
| Secret
|-
| 124
| Reg
| W1
| Secret
|-
| 198
| Ext
| G1
| Secret
|-
|}

==Teleporters==
A [[teleporter]] is a linedef that when crossed or switched makes the player or monster appear elsewhere in the level. There are only regular and extended teleporters, no generalized teleporters exist. Teleporters are the only direction sensitive walkover triggers in Doom (to allow them to be exited without teleporting again). They must be crossed from the first sidedef side in order to work.

The place that the player or monster appears is set in one of two ways. The more common is by a teleport thing in the sector tagged to the teleport line. The newer completely player preserving line-line silent teleport makes the player appear relative to the exit line (identified by having the same tag as the entry line) with the same orientation, position, momentum and height that they had relative to the entry line just before teleportation. A special kind of line-line teleporter is also provided that reverses the player's orientation by 180 degrees.

In the case of several lines tagged the same as the teleport line, or several sectors tagged the same, or several teleport things in the tagged sector, in all cases the lowest numbered one is used.

In Doom crossing a W1 teleport line in the wrong direction used it up, and it was never activatable. In Boom this is not the case, it does not teleport but remains active until next crossed in the right direction.

If the exit of a teleporter is blocked a monster (or anything besides a player) will not teleport through it. However, a player will teleport, including into a down crusher, a monster, or another player. In the latter two cases the monster/player occupying the spot dies messily, and this is called a [[telefrag]]. On [[:Category:MAP30|MAP30]], monsters can and will telefrag other monsters or players.

===Teleporter varieties===
A teleporter can be walkover or switched, and retriggerable or not.

A teleporter can have destination set by a teleport thing in the tagged sector, or by a line tagged the same as the teleport line. These are called thing teleporters and line teleporters respectively.

A teleporter can preserve orientation or set orientation from the position, height, and angle of the teleport thing. Note a thing destination teleporter always sets position, though it may preserve orientation otherwise.

A teleporter can produce green fog and a whoosh noise, or it can be silent, in which case it does neither.

A teleporter can transport monsters only, or both players and monsters.

===Teleporter linedef types===
;Regular and extended teleporter types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
! Silent
! Mon
! Plyr
! Orient
! Dest
|-
| 195
| Ext
| SR
| No
| Yes
| Yes
| Set
| TP thing in tagged sector
|-
| 174
| Ext
| S1
| No
| Yes
| Yes
| Set
| TP thing in tagged sector
|-
| 97
| Reg
| WR
| No
| Yes
| Yes
| Set
| TP thing in tagged sector
|-
| 39
| Reg
| W1
| No
| Yes
| Yes
| Set
| TP thing in tagged sector
|-
| 126
| Reg
| WR
| No
| Yes
| No
| Set
| TP thing in tagged sector
|-
| 125
| Reg
| W1
| No
| Yes
| No
| Set
| TP thing in tagged sector
|-
| 269
| Ext
| WR
| Yes
| Yes
| No
| Set
| TP thing in tagged sector
|-
| 268
| Ext
| W1
| Yes
| Yes
| No
| Set
| TP thing in tagged sector
|-
| 210
| Ext
| SR
| Yes
| Yes
| Yes
| Preserve
| TP thing in tagged sector
|-
| 209
| Ext
| S1
| Yes
| Yes
| Yes
| Preserve
| TP thing in tagged sector
|-
| 208
| Ext
| WR
| Yes
| Yes
| Yes
| Preserve
| TP thing in tagged sector
|-
| 207
| Ext
| W1
| Yes
| Yes
| Yes
| Preserve
| TP thing in tagged sector
|-
| 244
| Ext
| WR
| Yes
| Yes
| Yes
| Preserve
| Line with same tag
|-
| 243
| Ext
| W1
| Yes
| Yes
| Yes
| Preserve
| Line with same tag
|-
| 263
| Ext
| WR
| Yes
| Yes
| Yes
| Preserve
| Line with same tag (reversed)
|-
| 262
| Ext
| W1
| Yes
| Yes
| Yes
| Preserve
| Line with same tag (reversed)
|-
| 267
| Ext
| WR
| Yes
| Yes
| No
| Preserve
| Line with same tag 
|-
| 266
| Ext
| W1
| Yes
| Yes
| No
| Preserve
| Line with same tag 
|-
| 265
| Ext
| WR
| Yes
| Yes
| No
| Preserve
| Line with same tag (reversed) 
|-
| 264
| Ext
| W1
| Yes
| Yes
| No
| Preserve
| Line with same tag (reversed)
|-
|}

==Donuts==
A donut is a very specialized linedef type that lowers a pillar in a
surrounding pool, while raising the pool and changing its texture and
type.

The tagged sector is the pillar, and its lowest numbered line must be
two-sided. The sector on the other side of that is the pool. The pool
must have a two-sided line whose second sidedef does not adjoin the
pillar, and the sector on the second side of the lowest numbered such
linedef is the model for the pool's texture change. The model sector
floor also provides the destination height both for lowering the
pillar and raising the pool.

No generalized donut linedefs exist, and all are switched or
walkover.

===Donut linedef types===
;Regular and extended donut types
{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! #
! Class
! Trig
|-
| 191
| Ext
| SR
|-
| 9
| Reg
| S1
|-
| 155
| Ext
| WR
|-
| 146
| Ext
| W1
|-
|}

==Property transfer==
These linedefs are special purpose and are used to transfer
properties from the linedef itself or the sector on its first sidedef 
to the tagged sector(s). None are triggered, they simply exist.

;Extended property transfer linedefs

;213 Ext -- Set Tagged Floor Lighting to Lighting on 1st Sidedef's Sector

Used to give the floor of a sector a different light level from the
remainder of the sector. For example bright lava in a dark room.

;261   Ext --   Set Tagged Ceiling Lighting to Lighting on 1st Sidedef's Sector

Used to give the ceiling of a sector a different light level from the
remainder of the sector.

;260   Ext --   Make Tagged Lines (or this line if tag==0) Translucent

Used to make 2s normal textures translucent. If tag==0, then this linedef's
normal texture is made translucent if it is 2s, and the default translucency
map [[TRANMAP]] is used as the filter. If tag!=0, then all similarly-tagged 2s
linedefs' normal textures are made translucent, and if this linedef's first
sidedef contains a valid lump name for its middle texture (as opposed to a
texture name), and the lump is 64K long, then that lump will be used as the
translucency filter instead of the default TRANMAP, allowing different
filters to be used in different parts of the same maps. If the first side's
normal texture is not a valid translucency filter lump name, it must be a
valid texture name, and will be displayed as such on this linedef.

;242   Ext --   Set Tagged Lighting, Flats Heights to 1st Sidedef's Sector, and set colormap based on sidedef textures.

The 242 linedef type makes sectors in game "look" different than how their 
physical proportions really are by copying the sector height values from 
another sector. This action allows the tagged sector to have two levels -- 
an actual floor and ceiling, and another floor or ceiling where more 
flats are rendered. Things will stand on the actual floor or hang from the 
actual ceiling, while this function provides another rendered floor and 
ceiling at the heights of the sector on the first sidedef of the linedef. 
Typical use is "deep water" that can be over the player's head.

     ----------------------------------  < real sector's ceiling height
    |         real ceiling             | < control sector's ceiling texture
    |                                  |
    |                                  | < control sector's lightlevel
    |              A                   |
    |                                  | < upper texture as colormap
    |                                  |
    |                                  | < control sector's floor texture
     ----------------------------------  < control sector's ceiling height
    |         fake ceiling             | < real sector's ceiling texture
    |                                  |
    |                                  | < real sector's lightlevel
    |              B                   |
    |                                  | < normal texture as colormap
    |                                  |
    |          fake floor              | < real sector's floor texture
     ----------------------------------  < control sector's floor height
    |                                  | < control sector's ceiling texture
    |                                  |
    |                                  | < control sector's lightlevel
    |              C                   |
    |                                  | < lower texture as colormap
    |                                  |
    |          real floor              | < control sector's floor texture
     ----------------------------------  < real sector's floor height

Boom sectors controlled by a 242 linedef are partitioned into 3 spaces.
The viewer's xyz coordinates uniquely determine which space they are in.

If they are in space B (normal space), then the floor and ceiling textures
and lightlevel from the real sector are used, and the colormap from the 242
linedef's first sidedef's normal texture is used (COLORMAP is used if it is
invalid or missing). The floor and ceiling are rendered at the control
sector's heights.

If they are in space C ("underwater"), then the floor and ceiling textures
and lightlevel from the control sector are used, and the lower texture in
the 242 linedef's first sidedef is used as the colormap.

If they are in space A ("head over ceiling"), then the floor and ceiling
textures and lightlevel from the control sector are used, and the upper
texture in the 242 linedef's first sidedef is used as the colormap.

If only two of these adjacent partitions in z-space are used, such as 
underwater and normal space, one has complete control over floor textures,
ceiling textures, light level, and colormaps, in each of the two partitions.
The control sector determines the textures and lighting in the more "unusual"
case (e.g. underwater).

It is also possible for the fake floor to extend below the real floor, in
which case an invisible platform / stair effect is created. In that case,
the picture looks like this (barring any ceiling effects too):

     ----------------------------------  < real sector's ceiling texture
    |   real ceiling = fake ceiling    |
    |                                  |
    |                                  |
    |              B                   | < real sector's lightlevel
    |                                  | < normal texture's colormap
    |                                  |
    |          real floor              |
     ----------------------------------  < invisible, no texture drawn
    |                                  |
    |                                  |
    |                                  | < real sector's lightlevel
    |              C                   | < normal texture's colormap
    |                                  |
    |                                  |
    |          fake floor              | < real sector's floor texture
     ----------------------------------  < fake sector's floor height

In this case, since the viewer is always at or above the fake floor, no
colormap/lighting/texture changes occur -- the fake floor just gets drawn
at the control sector's height, but at the real sector's lighting and
texture, while objects stand on the higher height of the real floor.

It is the viewer's position relative to the fake floor and/or fake ceiling
which determines whether the control sector's lighting and textures should
be used, and which colormap should be used. If the viewer is always between
the fake floor and fake ceiling, then no colormap, lighting, or texture
changes occur, and the view just sees the real sector's textures and light
level drawn at possibly different heights.

If the viewer is below the fake floor height set by the control sector, or is
above the fake ceiling height set by the control sector, then the corresponding
colormap is used (lower or upper texture name), and the textures and lighting
are taken from the control sector rather than the real sector. They are still
stacked vertically in standard order -- the control sector's ceiling is always
drawn above the viewer, and the control sector's floor is always drawn below
the viewer.

The kaleidescope effect only occurs when [[sky|F_SKY1]] is used as the control sector's floor or ceiling. If F_SKY1 is used as the control sector's ceiling texture,
then under water, only the control sector's floor appears, but it "envelops"
the viewer. Similarly, if F_SKY1 is used as the control sector's floor texture,
then when the player's head is over a fake ceiling, the control sector's
ceiling is used throughout.

F_SKY1 causes [[Hall of Mirrors effect|HOM]] when used as a fake ceiling between the viewer and normal
space. Since there is no other good use for it, this kaleidescope is an
option turned on by F_SKY1. Note that this does not preclude the use of sky
REAL ceilings over deep water -- this is the control sector's ceiling, the
one displayed when the viewer is underwater, not the real one.

A colormap has the same size and format as Doom's [[COLORMAP]]. Extra colormaps
may be defined in Boom by adding them between C_START and C_END markers in [[WAD|wads]].
Colormaps between C_START and C_END are automatically merged by Boom with any
previously defined colormaps.

WATERMAP is a colormap predefined by Boom which can be used to provide a
blue-green tint while the player is under water. WATERMAP can be modified by
[[PWAD|pwads]].

Ceiling bleeding may occur if required upper textures are not used.

;223   Ext --   Length Sets Friction in tagged Sector, Sludge < 100, Ice > 100

The length of the linedef with type 223 controls the amount of friction
experienced by the player in the tagged sector, when in contact with the
floor. Lengths less than 100 are sticker than normal, lengths greater than
100 are slipperier than normal. The effect is only present in the tagged
sector when its friction enable bit (bit 8) in the sector type is set.
This allows the flat to be changed in conjunction with turning the effect
on or off thru texture/type changes.

==Constant pushers==
Two types of constant pushers are available, wind and current. Depending
on whether you are above, on, or below (special water sectors) the ground
level, the amount of force varies.

The length of the linedef defines the 'full' magnitude of the force, and
the linedef's angle defines the direction.

{| {{PrettySortable|class=mw-collapsible mw-collapsed}}
! line type         
! above  
! on   
! under
|-
| wind (224)
| full  
| half  
| none
|-
| current (225) 
| none  
| full  
| full
|}

The linedef should be tagged to the sector where you want the effect. The
special type of the sector should have bit 9 set (0x200). If this bit
is turned off, the effect goes away. For example, a fan creating a wind
could be turned off, and the wind dies, by changing the sector type and
clearing that bit.

Constant pushers can be combined with scrolling effects and point
pushers.

;224  Ext  --   Length/Direction Sets Wind Force in tagged Sectors

;225  Ext  --   Length/Direction Sets Current Force in tagged Sectors

==Point pushers==
Two types of point pushers are available, push and pull.

The previous implementation of these was SECTOR-SPECIFIC. The new
implementation ignores sector boundaries and provides the effect in a
circular area whose center is defined by a [[Thing]] of type 5001 (push)
or 5002 (pull). You now also do not have to set any option flags on these
Things. A new linedef type of 226 is used to control the effect, and this
line should be tagged to the sector with the 5001/5002 Thing.

The length of the linedef defines the 'full' magnitude of the force, and
the force is inversely proportional to distance from the point source. If
the length of the controlling linedef is L, then the force is reduced to
zero at a distance of 2L.

The angle of the controlling linedef is not used.

The sector where the 5001/5002 Things reside must have bit 9 set (0x200)
in its type. If this is turned off, the effect goes away.

Point pushers can be combined with scrolling effects and constant
pushers.

;226  Ext  --   Length Sets Point Source Wind/Current Force in Tagged Sectors

==Scrolling walls, flats, objects==

===Static scrollers===

The most basic kind of scrolling linedef causes some part of the tagged
sector or tagged wall to scroll, in proportion to the length of the
linedef the trigger is on, and according to the direction that trigger
linedef lies. For each 32 units of length of the trigger, the tagged
object scrolls 1 unit per frame. Since the length of a linedef does not
change during gameplay, these types are static, the scrolling effect
remains constant during gameplay. However, these effects can be combined
with, and/or canceled by, other scrollers.

;250    -- Scroll Tagged Ceiling

The ceiling of the tagged sector scrolls in the direction of the linedef
trigger, 1 unit per frame for each 32 units of linedef trigger length.
Objects attached to the ceiling do not move.

;251 -- Scroll Tagged Floor                                 

The floor of the tagged sector scrolls in the direction of the linedef
trigger, 1 unit per frame for each 32 units of linedef trigger length.
Objects resting on the floor do not move.

;252    -- Carry Objects on Tagged Floor                       

Objects on the floor of the tagged sector move in the direction of the
linedef trigger, 1 unit per frame for each 32 units of linedef trigger
length. The floor itself does not scroll.

;253    -- Scroll Tagged Floor, Carry Objects

Both the floor of the tagged sector and objects resting on that floor
move in the direction of the linedef trigger, 1 unit per frame for each
32 units of linedef trigger length.

;254    -- Scroll Tagged Wall, Same as Floor/Ceiling

Walls with the same tag as the linedef trigger scroll at the same
rate as a floor or ceiling controlled by one of 250-253, allowing
their motion to be synchronized. When the linedef trigger is not
parallel to the wall, the component of the linedef in the direction
perpendicular to the wall causes the wall to scroll vertically. The
length of the component parallel to the wall sets the horizontal
scroll rate, the length of the component perpendicular to the wall
sets the vertical scroll rate.

===Simple static scrollers===

For convenience three simpler static scroll functions are provided
for when a simple scrolling wall is needed without control over
its rate or proportionality.

;255    -- Scroll Wall Using Sidedef Offsets                   

For simplicity, a static scroller is provided that scrolls the first
sidedef of a linedef, based on its x- and y- offsets. No tag is used.
The x offset controls the rate of horizontal scrolling, 1 unit per
frame per x offset, and the y offset controls the rate of vertical
scrolling, 1 unit per frame per y offset.

;48     -- Animated wall, Scrolls Left                         

A linedef with this type scrolls its first sidedef left at a
constant rate of 1 unit per frame.

;85     -- Animated wall, Scrolls Right

A linedef with this type scrolls its first sidedef right at a
constant rate of 1 unit per frame.

===Dynamic scrolling===

To achieve dynamic scrolling effects, the position or rate of scrolling
is controlled by the relative position of the floor and ceiling of the
sector on the scrolling trigger's first sidedef. The direction of
scrolling remains controlled by the direction of the linedef trigger.
Either the floor or ceiling may move in the controlling sector, or
both. The control variable is the amount of change in the sum of the
floor and ceiling heights.

All scroll effects are additive, and thus two or more effects may
reinforce and/or cancel each other.

====Displacement scrollers====

In the first kind, displacement scrolling, the position of the scrolled
objects or walls changes proportionally to the motion of the floor or
ceiling in the sector on the first sidedef of the scrolling trigger. 
The proportionality is set by the length of the linedef trigger. If it
is 32 units long, the wall, floor, ceiling, or object moves 1 unit for
each unit the floor or ceiling of the controlling sector moves. If it
is 64 long, they move 2 units per unit of relative floor/ceiling motion
in the controlling sector and so on.

;245    -- Scroll Tagged Ceiling w.r.t. 1st Side's Sector 

The tagged sector's ceiling texture scrolls in the direction of the
scrolling trigger line, when the sector on the trigger's first sidedef
changes height. The amount moved is the height change times the trigger
length, divided by 32. Objects attached to the ceiling do not move.

;246    -- Scroll Tagged Floor w.r.t. 1st Side's Sector        

The tagged sector's floor texture scrolls in the direction of the 
scrolling trigger line when the sector on the trigger's first sidedef
changes height. The amount moved is the height change times the trigger
length, divided by 32. Objects on the floor do not move.

;247    -- Push Objects on Tagged Floor wrt 1st Side's Sector  

Objects on the tagged sector's floor move in the direction of the
scrolling trigger line when the sector on the trigger's first sidedef 
changes height. The amount moved is the height change times the trigger
length, divided by 32.

;248    -- Push Objects & Tagged Floor wrt 1st Side's Sector   

The tagged sector's floor texture, and objects on the floor, move in 
the direction of the scrolling trigger line when the sector on the
trigger's first sidedef changes height.  The amount moved is the height
change times the trigger length, divided by 32. 

;249    -- Scroll Tagged Wall w.r.t 1st Side's Sector          

Walls with the same tag as the linedef trigger scroll at the same
rate as a floor or ceiling controlled by one of 245-249, allowing
their motion to be synchronized. When the linedef trigger is not
parallel to the wall, the component of the linedef in the direction
perpendicular to the wall causes the wall to scroll vertically. The
length of the component parallel to the wall sets the horizontal
scroll displacement, the length of the component perpendicular to
the wall sets the vertical scroll displacement. The distance scrolled
is the controlling sector's height change times the trigger length,
divided by 32.

====Accelerative scrollers====

The second kind of dynamic scrollers, accelerative scrollers, also
react to height changes in the sector on the first sidedef of the
linedef trigger, but the RATE of scrolling changes, not the
displacement. That is, changing the controlling sector's height
speeds up or slows down the scrolling by the change in height
times the trigger's length, divided by 32. 

An on/off scroller can be made by using an accelerative scroller
and any linedef that changes the controlling sector's heights.
If a scroll effect which is initially on is desired, then the
accelerative scroller should be combined with a static one which
turns the scroll effect on initially. The accelerative scroller
would then need to be set up to cancel the static scroller's
effect when the controlling sector's height changes.

;214    -- Accel Tagged Ceiling w.r.t. 1st Side's Sector

The tagged sector's ceiling's rate of scroll changes in the direction
of the trigger linedef (use vector addition if already scrolling) by 
the change in height of the sector on the trigger's first sidedef
times the length of the linedef trigger, divided by 32. For example,
if the ceiling is motionless originally, the linedef trigger is 32 
long, and the ceiling of the controlling sector moves 1 unit, the 
tagged ceiling will start scrolling at 1 unit per frame.

;215    -- Accel Tagged Floor w.r.t. 1st Side's Sector         

The tagged sector's floor's rate of scroll changes in the direction of
the trigger linedef (use vector addition if already scrolling) by the
change in height of the sector on the trigger's first sidedef times
the length of the linedef trigger, divided by 32. For example, if
the floor is motionless originally, the linedef trigger is 32 long,
and the ceiling of the controlling sector moves 1 unit, the tagged
floor will start scrolling at 1 unit per frame.

;216    -- Accel Objects on Tagged Floor wrt 1st Side's Sector 

Objects on the tagged sector's floor's rate of motion changes in the
direction of the trigger linedef (use vector addition if already
moving) by the change in height of the sector on the trigger's first
sidedef times the length of the linedef trigger divided by 32. For
example, if the objects are motionless originally, the linedef trigger
is 32 long, and the ceiling of the controlling sector moves 1 unit,
the objects on the tagged floor will start moving at 1 unit per frame.

;217    -- Accel Objects&Tagged Floor wrt 1st Side's Sector    

The tagged sector's floor, and objects on it, change its rate of 
motion in the direction of the trigger linedef (use vector addition
if already moving) by the change in height of the sector on the
trigger's first sidedef times the length of the linedef trigger, divided
by 32. For example, if the floor and objects are motionless originally,
the linedef trigger is 32 long, and the ceiling of the controlling
sector moves 1 unit, the objects and the tagged floor will start moving
at 1 unit per frame.

;218    -- Accel Tagged Wall w.r.t 1st Side's Sector           

Walls with the same tag as the linedef trigger increase their 
scroll rate in sync with a floor or ceiling controlled by one of
214-217. When the linedef trigger is not parallel to the wall, the 
component of the linedef in the direction perpendicular to the wall 
causes the wall to increase its vertical scroll rate. The length of 
the component parallel to the wall sets the change in horizontal
scroll rate, the length of the component perpendicular to the wall
sets the change in vertical scroll rate. The rate change is the height
change times the trigger length, divided by 32.

==Detailed generalized linedef specification==

Boom has added generalized linedef types that permit the parameters of linedef actions to be nearly independently chosen. Instead of looking at the linedef special as one single number which corresponds to one single type, it is divided into entire ranges of effects where parts of the numbers are used as parameters.

{| {{prettytable|class=mw-collapsible mw-collapsed}}
!Effect!!Start of range!!End of range||Size of range
|-
|Generalized crushers||12 160 (0x2f80)||12 287 (0x2fff)||128
|-
|Generalized stairs||12 288 (0x3000)||13 311 (0x33ff)||1024
|-
|Generalized lifts||13 312 (0x3400)||14 335 (0x37ff)||1024
|-
|Generalized locked doors||14 336 (0x3800)||15 359 (0x3bff)||1024
|-
|Generalized doors||15 360 (0x3c00)||16 383 (0x3fff)||1024
|-
|Generalized ceilings||16 384 (0x4000)||24 575 (0x5fff)||8192
|-
|Generalized floors||24 576 (0x6000)||32 767 (0x7fff)||8192
|-
|Total||12 160 (0x2f80)||32 767 (0x7fff)||20 608
|}

The following sections define the placement and meaning of the bit
fields within each linedef category. Fields in the description are
listed in increasing numeric order.

Some nomenclature:

Target height designations:

H means highest, L means lowest, N means next, F means floor, C means
ceiling, n means neighbor, Cr means crush, sT means shortest
lower texture. 

Texture change designations:

*c0n - change texture, change sector type to 0, numeric model change
*c0t - change texture, change sector type to 0, trigger model change
*cTn - change texture only, numeric model change
*cTt - change texture only, trigger model change
*cSn - change texture and sector type to model's, numeric model change
*cSt - change texture and sector type to model's, trigger model change

A trigger model change uses the sector on the first side of the
trigger for its model. A numeric model change looks at the sectors
adjoining the tagged sector at the target height, and chooses the one
across the lowest numbered two sided line for its model. If no model
exists, no change occurs. Note that in DOOM II v1.9, no model meant
an illegal sector type was generated.

===Generalized floors (8192 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits   
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3     
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo             
| 2     
| 0x0018      
| 3
|-
| model   
| trig/numeric -or- nomonst/monst    
| 1     
| 0x0020      
| 5
|-
| direct  
| down/up                            
| 1     
| 0x0040      
| 6
|-
| target  
| HnF/LnF/NnF/LnC/C/sT/24/32         
| 3     
| 0x0380      
| 7
|-
| change  
| nochg/zero/txtonly/type            
| 2     
| 0x0c00      
| 10
|-
| crush   
| no/yes                             
| 1     
| 0x1000      
| 12
|}

DETH Nomenclature:

 W1[m] F->HnF DnS [c0t] [Cr]
 WR[m] F->LnF DnN [c0n] 
 S1[m] F->NnF DnF [cTt]  
 SR[m] F->LnC DnT [cTn]          
 G1[m] F->C   UpS [cSt]          
 GR[m] FbysT  UpN [cSn]          
 D1[m] Fby24  UpF                        
 DR[m] Fby32  UpT                        

Notes:

# When change is nochg, model is 1 when monsters can activate trigger otherwise monsters cannot activate it.
# The change fields mean the following:
#*   nochg   - means no texture change or type change
#*   zero    - means sector type is zeroed, texture copied from model
#*   txtonly - means sector type unchanged, texture copied from model
#*   type    - means sector type and floor texture are copied from model
# down/up specifies the "normal" direction for moving. If the target specifies motion in the opposite direction, motion is instant. Otherwise it occurs at speed specified by speed field.
# Speed is 1/2/4/8 units per [[tic]]
# If change is nonzero then model determines which sector is copied. If model is 0 its the sector on the first side of the trigger. If model is 1 (numeric) then the model sector is the sector at destination height on the opposite side of the lowest numbered two sided linedef around the tagged sector. If it does not exist no change occurs.

===Generalized ceilings (8192 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                        
! NBits   
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR             
| 3     
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo              
| 2     
| 0x0018      
| 3
|-
| model   
| trig/numeric -or- nomonst/monst     
| 1     
| 0x0020      
| 5
|-
| direct  
| down/up                             
| 1     
| 0x0040      
| 6
|-
| target  
| HnC/LnC/NnC/HnF/F/sT/24/32          
| 3     
| 0x0380      
| 7
|-
| change  
| nochg/zero/txtonly/type             
| 2     
| 0x0c00      
| 10
|-
| crush   
| no/yes                              
| 1     
| 0x1000      
| 12
|}

DETH Nomenclature:

 W1[m] C->HnC DnS [Cr] [c0t] 
 WR[m] C->LnC DnN      [c0n] 
 S1[m] C->NnC DnF      [cTt] 
 SR[m] C->HnF DnT      [cTn]     
 G1[m] C->F   UpS      [cSt]     
 GR[m] CbysT  UpN      [cSn]     
 D1[m] Cby24  UpF                        
 DR[m] Cby32  UpT                        

Notes:

# When change is nochg, model is 1 when monsters can activate trigger otherwise monsters cannot activate it.
# The change fields mean the following:
#*nochg   - means no texture change or type change
#*zero    - means sector type is zeroed, texture copied from model
#*txtonly - means sector type unchanged, texture copied from model
#*type    - means sector type and ceiling texture are copied from model
# down/up specifies the "normal" direction for moving. If the target specifies motion in the opposite direction, motion is instant. Otherwise it occurs at speed specified by speed field.
# Speed is 1/2/4/8 units per tic
# If change is nonzero then model determines which sector is copied. If model is 0 its the sector on the first side of the trigger. If model is 1 (numeric) then the model sector is the sector at destination height on the opposite side of the lowest numbered two sided linedef around the tagged sector. If it does not exist no change occurs.

===Generalized doors (1024 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits    
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3      
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo             
| 2      
| 0x0018      
| 3
|-
| kind    
| odc/o/cdo/c                        
| 2      
| 0x0060      
| 5
|-
| monster 
| n/y                                
| 1      
| 0x0080      
| 7
|-
| delay   
| 1/4/9/30 (secs)                    
| 2      
| 0x0300      
| 8
|}

DETH Nomenclature:

 W1[m] OpnD{1|4|9|30}Cls S
 WR[m] Opn               N
 S1[m] ClsD{1|4|9|30}Opn F
 SR[m] Cls               T
 G1[m]
 GR[m]
 D1[m]
 DR[m]

Notes:

# The odc (Open, Delay, Close) and cdo (Close, Delay, Open) kinds use the delay field. The o (Open and Stay) and c (Close and Stay) kinds do not.
# The precise delay timings in gametics are: 35/150/300/1050
# Speed is 2/4/8/16 units per tic

===Generalized locked doors (1024 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits    
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3      
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo             
| 2      
| 0x0018      
| 3
|-
| kind    
| odc/o                              
| 1      
| 0x0020      
| 5
|-
| lock    
| any/rc/bc/yc/rs/bs/ys/all          
| 3      
| 0x01c0      
| 6
|-
| sk=ck   
| n/y                                
| 1      
| 0x0200      
| 9
|}

DETH Nomenclature:

 W1[m] OpnDCls           S Any
 WR[m] Opn               N R{C|S|K}
 S1[m]                   F B{C|S|K}
 SR[m]                   T Y{C|S|K}
 G1[m]                     All{3|6}
 GR[m]
 D1[m]
 DR[m]

Notes:

# Delay for odc kind is constant at 150 gametics or about 4.333 secs
# The lock field allows any key to open a door, or a specific key to open a door, or all keys to open a door.
# If the sk=ck field is 0 (n) skull and cards are different keys, otherwise they are treated identically. Hence an "all" type door requires 3 keys if sk=ck is 1, and 6 keys if sk=ck is 0.
# Speed is 2/4/8/16 units per tic

===Generalized lifts (1024 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits    
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3      
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo             
| 2      
| 0x0018      
| 3
|-
| monster 
| n/y                                
| 1      
| 0x0020      
| 5
|-
| delay   
| 1/3/5/10 (secs)                    
| 2      
| 0x00c0      
| 6
|-
| target  
| LnF/NnF/LnC/LnF<->HnF(perp.)       
| 2      
| 0x0300      
| 8
|}

DETH Nomenclature:

 W1[m] Lft  F->LnFD{1|3|5|10}    S
 WR[m]      F->NnFD{1|3|5|10}    N
 S1[m]      F->LnCD{1|3|5|10}    F
 SR[m]      HnF<->LnFD{1|3|5|10} T
 G1[m]
 GR[m]
 D1[m]
 DR[m]

Notes:

# The precise delay timings in gametics are: 35/105/165/350
# Speed is 1/2/4/8 units per tic
# If the target specified is above starting floor height, or does not exist the lift does not move when triggered. NnF is Next Lowest Neighbor Floor.
# Starting a perpetual lift between lowest and highest neighboring floors locks out all other floor actions on the sector, even if it is stopped with the non-extended stop perpetual floor function.

===Generalized stairs (1024 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits    
! Mask     
! Shift
|-
| trigger
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3      
| 0x0007      
| 0
|-      
| speed         
| slow/normal/fast/turbo                   
| 2            
| 0x0018            
| 3
|-
| monster       
| n/y                                      
| 1            
| 0x0020            
| 5
|-
| step          
| 4/8/16/24                                
| 2            
| 0x00c0           
|  6
|-
| dir           
| dn/up                                    
| 1            
| 0x0100            
| 8
|-
| igntxt        
| n/y                                      
| 1            
| 0x0200            
| 9
|}

DETH Nomenclature:

 W1[m] Stair Dn s4  S [Ign]
 WR[m]       Up s8  N
 S1[m]          s16 F
 SR[m]          s24 T
 G1[m]
 GR[m]
 D1[m]
 DR[m]

Notes:

# Speed is .25/.5/2/4 units per tic
# If igntxt is 1, then the staircase will not stop building when a step does not have the same texture as the previous.
# A retriggerable stairs builds up and down alternately on each trigger.

===Generalized crushers (128 types)===

{| {{prettytable|class=mw-collapsible mw-collapsed}}
! field   
! description                       
! NBits    
! Mask     
! Shift
|-
| trigger 
| W1/WR/S1/SR/G1/GR/P1/PR            
| 3      
| 0x0007      
| 0
|-
| speed   
| slow/normal/fast/turbo             
| 2      
| 0x0018      
| 3
|-
| monster 
| n/y                                
| 1      
| 0x0020      
| 5
|-
| silent  
| n/y                                
| 1      
| 0x0040      
| 6
|}

DETH Nomenclature:

 W1[m] Crusher S [Silent]
 WR[m]         N
 S1[m]         F
 SR[m]         T
 G1[m]
 GR[m]
 D1[m]
 DR[m]

Notes:

# Speed is 1/2/4/8 units per second, faster means slower damage as usual.
# If silent is 1, the crusher is totally quiet, no start/stop sounds.

==Sources==
* {{edgeeg|line_types.htm|Line types}}
* {{eterwiki|Linedef types}}
* [http://doomlegacy.sourceforge.net/docs/editing.html Doom Legacy editing guide]

[[Category:Doom engine]]
[[Category:Lists]]