Why are some projects split into different parts?
In the proofreading rounds, books intended for beginners were generally split into smaller units. This was not only to ensure a constant supply of projects for beginners, but to get feedback from mentors to the proofreaders faster than if the books were kept in one piece. It is encouraged, though not absolutely essential, for the same post-processor to check out all of the pieces of these books at the same time so that the formatting will be consistent throughout. The pieces should be joined together into one file for submission.
