According to the README file, this is released "under the same terms as aewm", i.e. MIT and 9wm licenses. @Licenses team, is 9wm a Free Software license, i.e., can it be added to the MISC-FREE licenses group? <http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/licenses/9wm?revision=1.1&view=markup>
Fixed.