       SippCommentPut handle name [value]
              Set  a comment in the image store specified by han-
              dle.  This sets a  comment  of  name  name  to  the
              string  value.   If value is omitted, then the name
              is saved without an empty value.
              Random access image store, such as  pixmaps,  don't
              automatically  clear  comments  if  reused to store
              subsequent  images,  either  through  rendering  or
              copying, Either delete and recreate the image store
              or delete all comments with SippCommentDelete.
              If the image store does  not  support  comments,  a
              error is returned.
