+The Unix `configure' script and its various requirements are generated
+by the shell script `mkauto.sh', which requires GNU Autoconf, GNU
+Automake, and Gtk; if you've got the source from Subversion rather
+than using one of our source snapshots, you'll need to run this
+yourself.
+
+Documentation (in various formats including Windows Help and Unix
+`man' pages) is built from the Halibut (`.but') files in the `doc'
+subdirectory using `doc/Makefile'. If you aren't using one of our
+source snapshots, you'll need to do this yourself. Halibut can be
+found at <http://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
+