In the first part of this book, we have discussed the architecture of writing processes (Planning, Translating and Revising), such as it can be described through different models. Nevertheless, the structural description of processes implied in the activity of text writing is not sufficient to account for the progress of this activity. The writing activity is indeed based on dynamism of processes. Thus, when composing a text, writers have to continually shift between planning the main ideas, content translating and text revising. This continuous shifting gives the writing activity its cyclic nature and depends on a strategic and recursive ordering of different subprocesses.