A quick glance suggests this seems a little more flexible then doxygen or cweb in terms of what you can annotate, but it seems like it could have been built to expand on doxygen/javadoc syntax, whereas this looks like it reinvents the wheel when it comes to annotation. It seems like compatibility with doxygen + additional features might be a better choice, especially since, as a new js program, it may be slower then doxygen, which is mature and compiled from C++, when running on big/complex files.

That said it looks well-documented and mature.