The only thing that i can relate to a process documentation would be a manual for an aircraft. It gives a small description on how the system/parts work. There are time when more than one manual is used for a single repair. The manual will take you step by step on how to do the job with caution notes inserted between steps. Every little repair or replacement of a part must go according to the manual and FAA standards. Depending on the task at hand missing one step or ignoring a step could be difference between life or death.