Automap scale preserved after warps in Heretic and Hexen

If the player uses the warp cheat (engage in Heretic and visit in Hexen) while being in the automap view, the new level will start in the map mode with the scale of the old level. The effect will also occur if one begins a new level via the main menu under the same conditions. By exiting the automap view and switching to it again, the map will adopt the normal scale.

As a rule in the Doom engine games, the scale of the current level is defined by its size. The minimum scale has been reached when the complete layout of the level fits nearly entirely to the automap screen. However, the quirk allows the player to pass the limit temporarily.

Example
The extreme instance uses E3M7: The Chasm (Heretic) and E4M6: Halls of the Apostate (Heretic) that are relevant for a reason: the former has the smallest automap scale in the game while the latter has the biggest.


 * 1) Begin E3M7 by writing engage37 after setting a new game and switch to the automap view.
 * 2) Change the scale to the minimum size by pressing 0 and draw the complete layout by typing ravmap once. To reveal the things, type the latter one more time.
 * 3) When you finally write engage46, the system will load E4M6, but the automap will use the small scale of E3M7 until the view is exited.