Suggested documentation system for ECMAScript4MPS?

After basic scopes (several constraints still missing) I'm about to start writing some docs.
So far I've used Sphinx to document some internal projects. I like Sphinx because:

• source stay into the repository so one can commit documentation at the same time new features get committed (hopefully).
  
• Sphinx has multipage HTML output.
  
• and single PDF output.

The documentation language of the mbeddr project it's interesting but I don't know yet the effort to used it standalone.

Every suggestion on this topic is welcome. Thx