Debug feature that can be activated in the first room of Space Quest III by inputing the command "qa". It opens up a warp menu that you can use to skip to any chapter of the story.
It only works after entering debug mode with "backstage pass" and only if the player hasn't left the first room yet. Warping at a specific chapter doesn't give the required inventory objects for that chapter, so the player need to get them manually with the debug mode.
The whole feature was designed for the programmers to test the game, and was not made for players to play with, so it can be buggy and may cause some damage to your save files.