Answer:
Step-by-step explanation:
Do you have a manual that came with your family's car?
That manual was written by a technical writer.
Do you have directions on how to use that water purifier make in China. And the directions are special? A technical writer wrote those as well.
We bought a temporary winter garage that had no words of explanation -- just a lot of pictures. A technical writer didn't draw the directions, but he did put them in order so that what you were to do was easily understood -- step by step.
A technical writer is a person who writes manuals and directions and warnings and specifications about every machine you bought. They are the ones that are responsible for simplifying things so that what you read is understandable. Most of the time you shouldn't have to phone the company about what is meant.