Quote: "is there an Include# command?"
Yes, but that isn't what he's after. I think KISTech is on the right track.
Mystic Trunks:
What you would do is create files for each level which
describe how a level is built. In your game, you have a variable which you stores the current level and increment it when a level is completed.
You also have a 'general purpose' level building procedure (or function) which uses the current level number to load the level file and build the next level.
This can be a text file which lists all the objects to load along with where they are placed, variable settings and that sort of stuff.
These files can be called Level001.dat, Level002.dat and so on. That way, if you have just completed level 7, then you know the next level is 8 and you have to load Level008.dat to find out how to create the next level.
TDK_Man