The Image Undo System

GimpUndo
GimpUndoStack
GimpImageUndo
GimpItemUndo
GimpItemPropUndo
GimpDrawableUndo
GimpDrawableModUndo
GimpChannelUndo
GimpChannelPropUndo
GimpLayerUndo
GimpLayerPropUndo
GimpLayerMaskUndo
GimpLayerMaskPropUndo
GimpFloatingSelUndo
GimpGroupLayerUndo
GimpMaskUndo
GimpGuideUndo
GimpSamplePointUndo