You can clone with
HTTPS or Subversion.
@see @sa on class/category description
@page for cross-class or functionset documentation
partially duplicated to #258
Sorry for late answer, this one slipped my radar :)
While partial headerdoc support was implemented in appledoc and was updated with various contributions, I don't plan to support headerdoc format. Rather than that, I planned to create separate utility that would convert headerdoc to appledoc, but never got to do it.
For now I'm closing the ticket...