Although Manhattan is thoroughly documented, occasionally the documentation lags behind development.
This is certainly the case with the recent release of Manhattan 3.2. While the Administrator's Reference Manual is up-to-date as of 08 December 2006, the teacher's and student's manuals still refer to the 2.x releases. Nevertheless, they are still a very good source of information for using the current version of Manhattan.
Updating the documentation is a high priority, and will be done as soon as possible.