All commands transform the model but this package is contains commands that aren't covered by the other packages.
When creating new transformations, try to reuse existing code; make CompoundCommands that use others instead of recoding everything. You may not be aware of all the issues surrounding changing a certain PathNode type.
Furthermore, don't look at commands that are a hybrid of CompoundCommand and Command as examples. Look for clean ones. Hybrid commands are ugly and hard to maintain; if you find one, make sure there's a bug to refactor it in BugZilla.
This package contains commands used internally by the seg.jUCMNav.model.commands.transformation package; they should not be invoked directly.