The developer's parameter runs the game in [[developer mode]], creating screen shots with the F1 key instead of displaying the the help screen and showing the tics-per-frame meter on the lower left of the screen. If only the first dot on the meter is displayed, performance is optimal. The <tt>-devparm</tt> parameter is also required by some parameters in older versions of Doom.
=== -ravpic ===
(''screenshot)<br>
<tt>''heretic'' -ravpic</tt><br>
<tt>''hexen'' -ravpic</tt>
This parameter replaces -devparm for [[Heretic]] and [[Hexen]], and allows to take screen shots with the F1 key. (It does not display the ticker which is instead enabled by cheat codes for these games, <tt>ticker</tt> for Heretic and <tt>rrettenmund</tt> for Hexen.) This parameter doesn't exist for Doom.
=== -dial ===
* [http://www.gamers.org/docs/FAQ/doomfaq/ The "Official" Doom FAQ], compiled by [[Hank Leukart]]
[[Category: Doom engine]]
[[Category:Lists]]