mkdir tmp.$$
mkdir tmp.$$/puzzles
-for i in *.c *.h LICENCE README Recipe mkfiles.pl Makefile.*; do
+# Build Windows Help and text versions of the manual for convenience.
+halibut --winhelp=puzzles.hlp --text=puzzles.txt puzzles.but
+
+for i in *.c *.h *.but LICENCE README Recipe mkfiles.pl Makefile.* \
+ puzzles.txt puzzles.hlp puzzles.cnt; do
ln -s ../../$i tmp.$$/puzzles
done