Hi Kenny, I just updated from CVS and found several challenges. The most intriguing is the IDE related stuff in several files (core, detritus). As there are now some functions that are only meaningful when running on AllegroCL and when having the IDE in the image I'd like to know what the IDE pushes on *features* to make these functions only being there when Allegro and IDE are available. Do you know what the magic #+(allegro ide) or some such string would be ? Thx! Frank