Sometimes the models in trunk/models/passing, failing, etc. are useful to link to, even if they are not part of the official docs (yet). How does one compose a URL to get to these directories?
To get the entire directory, use http://openmx.psyc.virginia.edu/repoview/1/trunk/models/passing. To link to a single file use something like http://openmx.psyc.virginia.edu/repoview/1/trunk/models/passing/Acemix.R. This will always reference the most recent version of the file in the repository.