[Insight-users] tool used to generate software guide?

[Juan Cardelino]

Hello guys,
                 I'm interested in documenting my code in the same way
as ITK. That is, to place comments in the code possibly with latex
syntax, and then extract it, compile with latex and generate a pdf. In
addition, it would be nice to extract certain parts of the code and
place them in the document as in the software guide. Is there a
standard open source tool to do this? or do you guys use your own hand
crafted parser?
Thanks in advance.
Best,
       Juan