@item @uref{http://fontforge.sf.net/, FontForge} (20060125 or
newer; 20100501 or newer is recommended; must be compiled
-with --enable-double. Failure to do so can lead to poor intersection
-calculations and poorly-rendered glyphs.)
+with @option{--enable-double}. Failure to do so can lead to
+poor intersection calculations and poorly-rendered glyphs.
+20110222 currently renders the feta font correctly
+without @option{--enable-double}.)
@item @uref{http://www.gnu.org/software/bison/, GNU Bison}