This simply adds a separator to the menu. The name specifies both the menu
containing the separator and a name for the separator itself. Separator names
do not appear in the menu, but are still required.
This page is maintained by
James Bonfield.
Last generated on 21 January 1999.
URL: http://www.mrc-lmb.cam.ac.uk/pubseq/manual/scripting_14.html