Problem
One of your problem is a user's manual, which must include all the required four parts ("Summary," " Product Description," "Operating Instruction," and "Trouble Shooting Techniques") detailed in this resource. Use this threaded discussion forum to showcase your in-depth knowledge of these parts and your readiness for the assigned user's manual.
a) Why do most user manuals include the above-mentioned sections ("Summary," " Product Description," "Operating Instruction," and "Trouble Shooting Techniques")? How useful/helpful are they?
b) Are there guidelines for each of these parts? If so, how do you plan on using them?