Thank you for the answer. I had no knowledge of lp4all. I have been using Robodoc (sourceforge.net/.../robodoc) which is similar to lp4all as it takes the information from the source comments given by the programmer. I defined a few tokens for the comment and it works fine.
But Doxygen is much more complete...
Although not trivial, Doxygen would be a great documentation tool for cobol, especially with the new cobol approaches like managed code.
Fortran is far from being a LL language and has its doxygen parser!