ref: 8040eba4c0f8a0996eb6487104646a0e5b261ee7
dir: /man/chocolate-doom-options.in/
-1 Sets screenmultiply to 1 -2 Sets screenmultiply to 2, doubling up the screen by 2x. -extraconfig <file> Specifies a configuration file to use for Chocolate Doom-specific settings. The default is 'chocolate-doom.cfg' -fullscreen Runs the game fullscreen. -nofullscreen Runs the game in a window -window runs the game in a window -gameversion <ver> Emulates a specific release of Doom 1.9. Valid values are "1.9", "ultimate" and "final". -grabmouse Grabs the mouse during play -nograbmouse Does not grab the mouse during play -iwad <file> Specifies an IWAD file to use. If unspecified, chocolate doom will look for doom2.wad, doom.wad, tnt.wad, plutonia.wad, in /usr/share/games/doom, and the current directory. -longtics When recording demos, records in the the modified "Doom v1.91" format to avoid losing turning resolution. -merge <file> Loads a PWAD but simulates merging it into the main IWAD -novert Turns on novert -nonovert Turns off novert