DupDispose       1179 magick/layer.c                 disposals[i-1]=DupDispose;
DupDispose       1306 magick/layer.c             if ( disposals[i-1] == DupDispose )
DupDispose       1320 magick/layer.c     if ( disposals[i-1] == DupDispose )
DupDispose       1328 magick/layer.c          disposals[i-1]=DupDispose;
DupDispose       1403 magick/layer.c     if ( disposals[i] == DupDispose ) {