wm-menu-config8
This script was called in maintainer postinst and postrm scripts of debian packages that install window managers or other programs that read menus (like pdmenu). it is now deprecated since it was broken by design: it is not available when menu is not installed, but it should be.
Overview
Don't use this script anymore, see the menu documentation, available in /usr/share/doc/menu to find out how to do without it.
Copying
wm-menu-config is distributed under the GNU General Public License. (GPL 2.0 or greater).