X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/8d79d5d968662302f2f050f2f8abd1d5622b7c54..05f411a6b7c20f42a2500df4b70eba70e8ff088b:/README

diff --git a/README b/README
index 9009117..deded6b 100644
--- a/README
+++ b/README
@@ -1,5 +1,6 @@
 This is the README accompanying the source code to Simon Tatham's
-puzzle collection.
+puzzle collection. The collection's web site is at
+<http://www.chiark.greenend.org.uk/~sgtatham/puzzles/>.
 
 You should find several Makefiles in the source code:
 
@@ -27,3 +28,9 @@ back to the maintainer. The makefiles are generated automatically by
 the Perl script `mkfiles.pl' from the file `Recipe'. If you need to
 change the makefiles as part of a patch, you should change Recipe
 and/or mkfiles.pl.
+
+The manual, provided in Windows Help and text formats, is generated
+from a Halibut source file (puzzles.but), which is the preferred form
+for modification. To generate the manual in other formats, rebuild it,
+or learn about Halibut, visit the Halibut website at
+<http://www.chiark.greenend.org.uk/~sgtatham/halibut/>.