+# Build Windows Help and text versions of the manual for convenience.
+halibut --winhelp=puzzles.hlp --text=puzzles.txt puzzles.but
+
+# Build a text version of the HACKING document.
+halibut --text=HACKING HACKING.but
+
+for i in *.c *.m *.h *.but *.plist *.icns LICENCE README Recipe \
+ mkfiles.pl Makefile Makefile.* \
+ HACKING puzzles.txt puzzles.hlp puzzles.cnt; do