do/undo routines for programming during rollback

undomgr.h
aboutdlg.h
gdigraph.h
mainfrm.h
resource.h
stdafx.cpp
stdafx.h
res\Toolbar.bmp
...\undomgr_wtl.ico
undomgr_wtl.cpp
undomgr_wtl.dsp
undomgr_wtl.dsw
undomgr_wtl.h
undomgr_wtl.rc
undomgr_wtlview.h

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