void Snapshot( string changeTitle )

Obsolete

Auto Snapshotting is obsolete and no longer working. If you really want to use snapshotting for Undo, create/restore the snapshots manually in the undo/redo actions provided to UndoSystem.Insert

Summary

Should be called after you make a change to your project. The snapshot system is good for self contained projects that can be serialized and deserialized quickly.