UndoCommand      2807 magick/display.c   (void) XMagickCommand(display,resource_info,windows,UndoCommand,image);
UndoCommand      3535 magick/display.c             (void) XMagickCommand(display,resource_info,windows,UndoCommand,
UndoCommand      5771 magick/display.c               (void) XMagickCommand(display,resource_info,windows,UndoCommand,
UndoCommand      6421 magick/display.c     case UndoCommand:
UndoCommand      6782 magick/display.c       return(UndoCommand);
UndoCommand      9831 magick/display.c             (void) XMagickCommand(display,resource_info,windows,UndoCommand,
UndoCommand      11091 magick/display.c       UndoCommand,
UndoCommand      11510 magick/display.c             case UndoCommand:
UndoCommand      14157 magick/display.c       UndoCommand,
UndoCommand      14266 magick/display.c       UndoCommand,