putty/doc/chmextra.but

\# If you want to do a Halibut build of the CHM file by hand, without
\# the help of the CMake edifice, then include this file which will
\# refer to chm.css. The CMake edifice builds its own with a different
\# pathname in it, for the sake of out-of-tree builds.

\cfg{chm-extra-file}{chm.css}