Time Tracking API Documentation - by Person

The documentation for the “Time Tracking API”:http://www.getharvest.com/api/time-tracking only shows the URI for getting time entries made by the requesting user (the user account that authenticated the HTTP connection). The URI for this is as follows:

GET /daily/#{day_of_the_year}/#{year}

However, it is also possible (for administrator-level users) to access time entries for any user, using the following URI:

GET /daily/#{user_id}/#{day_of_the_year}/#{year}

The latter is completely undocumented (except that it also happens to be the URI when browsing other users timesheet in the Harvest Web UI).

Is part of the API officially supported? Can we get it added to the documentation? Also, what other methods support this additional argument? Can we create a time entry on behalf of another user? Is this done via the URI or by adding the user_id to the XML POST data?

Thanks,