Section #9 states: "We recommend you place the license in /usr/local/share/doc/<name>/."
If you've already have a /usr/local/share/<name>/ directory for the application data files, as well as a /usr/local/share/<name>/doc/ directory for misc stuff (as well as a man page and gnuinfo page), is there really any point in also creating the suggested directory just for the license? The port in question is GNU Backgammon, so I doubt there will be much confusion with this one. On the other hand, if we're using the suggested /usr/local/share/doc/<name>/ for keeping track of all licenses of all installed ports, then I can see why it's a good thing.