Package doxygen

A documentation system for C/C++

Doxygen can generate an online class browser (in HTML) and/or a
reference manual (in LaTeX) from a set of documented source files. The
documentation is extracted directly from the sources. Doxygen can
also be configured to extract the code structure from undocumented
source files.

General Commands (Section 1)
Doxygen is a documentation system for C++, C, Java, Objective-C, IDL (Corba and Microsoft flavors) and to some extent PHP, C#, and D.
Generates a search index called doxysearch.db from one or more search data files produced by doxygen. Use doxysearch.cgi as a CGI program to search the data...
CGI binary that is used by doxygen generated HTML output to search for words. The tool uses the search index called doxysearch.db produced by doxyindexer.