rmvrst - temporarily remove and restore a picture
temporarily removes all occurrences of picture
may be a basic, complex, or top picture, previously built by calling
any of the mk...(3U) routines. It may refer to a occurences of
picture in the current display (see
) as well as occurrences in pictures that will be presented later.
effectively removes a picture by skipping over it when any
display-list containing that picture is executed.
Removed pictures may be restored by calling
must refer to a picture that previously has been removed and has not
yet been restored.
both return -1 for the following:
is equal to EOP.
Errors occur while writing display-list memory.