DupDispose       1169 magick/layer.c                 disposals[i-1]=DupDispose;
DupDispose       1296 magick/layer.c             if ( disposals[i-1] == DupDispose )
DupDispose       1310 magick/layer.c     if ( disposals[i-1] == DupDispose )
DupDispose       1318 magick/layer.c          disposals[i-1]=DupDispose;
DupDispose       1393 magick/layer.c     if ( disposals[i] == DupDispose ) {