Installing _all_ documentation?

[Peter Simons]

Ian Lynagh writes:

 > echo "SGMLDocWays   := html dvi ps" >> mk/build.mk

This works great! Is there any chance I can "extend" this technique so
that it will include the documentation of, say happy, haddock, and
alex as well?

Peter


P. S.: I'm sorry ... I guess I should really read the documentation of
       the fptools myself. :-)