Hello, i just thought, that in order to get down to a minimal kernel image, it would be nice to move all Morphic globals into a shared pool. Things like, World, ActiveWorld could be placed into a MorphicPool class. Then we can make an easy transition 1. add this pool to classes which using that global & recompile them 2. for classes, which should have no dependency from Morphic, use a messages like Object >> currentWorld ^ (Smalltalk at: #MorphicPool ifAbsent: [ self error: 'bummer' ]) currentWorld . Then, i hope, you can unload the Morphic using MC and it will leave no trace in an image (or at least less trace than usual ;). Same could be applied to Graphics package (to get rid a Display global) -- Best regards, Igor Stasenko AKA sig.