Hi David & Falcury, in the DOS version the level exit door can be used in Level 6 and 12b after a certain special event occurs, and despite being not opened you can still exit to the next level. Maybe it could be related to the special events document in Popot?
In SDLPoP however, you cannot go through the exit door and it needs to be triggered open to go to the next level.
Wondering what is the difference of this exit door situation between the DOS and SDLPOP?