Rdoc - documentation from ruby source files:
* generates structured html and xml documentation from ruby source
and c extensions.
* automatically extracts class, module, method, and attribute
definitions. these can be annotated using inline comments.
* analyzes method visibility.
* handles aliasing.
* uses non-intrusive and implicit markup in the comments. readers of
the original source needn't know that it is marked up at all.
this package provides the rdoc tool which uses ruby 1.9.1.