For practical reasons, that is, reasons that have nothing to do with software engineering, duplicates of directory trees must be maintained:

The re-motion assembly directory is needed for both

Each of these projects holds its own local copy of the re-motion assembly directory.

The template tree is part of the uigen.exe project. It is needed by the PhoneBook project, so the latter keeps a copy of the former.

Each of these directory/tree copy must be identical to its duplicate for every major release of re-motion. They are intimately related to each other, because

For more background, see Maintaining uigen.exe and uigen.exe templates.

For class-room training and the PhoneBook tutorial, the use of the entire local re-motion project is not very practical. It is much more practical to work with the re-motion build results, i.e. the re-motion assemblies.

The responsibility of keeping the two template directories in sync with each other falls on the PhoneBook/uigen.exe/template maintainer (as explained in Maintaining uigen.exe and uigen.exe templates).

See also