Absent any part the machine is dysfunctional. For authors of legal writing texts and nuclear power plant owners, no contingency can be left unanticipated, every action must be according to plan and structure. There is a procedural way of doing every thing that needs to be done. The triumph of technique is a corollary of the will to micro-manage writing. Technique and micro-managing are all part of the heavy focus on planning.
Planning preceeds the writing and dominates as the writing is produced.
The focus is on a planned production. See e.g., Charrow, et. One must define purpose, audience, and constraints. Careful thinking through each step will help you construct a complete, wellf-formed document. In reading legal writing texts, I had the oddest of feelings, a kind of frightening solitariness.