DupDispose       1180 magick/layer.c                 disposals[i-1]=DupDispose;
DupDispose       1307 magick/layer.c             if ( disposals[i-1] == DupDispose )
DupDispose       1321 magick/layer.c     if ( disposals[i-1] == DupDispose )
DupDispose       1329 magick/layer.c          disposals[i-1]=DupDispose;
DupDispose       1404 magick/layer.c     if ( disposals[i] == DupDispose ) {