I have to remember that org-mode does not evaluate something unless it is eventually exported. * doc/org/hoa.org, doc/org/ioltl.org, doc/org/tut21.org, doc/org/tut30.org: Adjust exports commands.
* doc/org/tut30.org: New file. * doc/Makefile.am, doc/org/tut.org: Add it.