Who can please elaborate to me well the explanation on each of the paragraph of the golden rule of Technical Writing:

–> Here is the golden rule:

Always have in mind specific reader, real or imaginary when writing a report and always assume that this reader is intelligent but uniformed.
Before you start to write, always decide what the exact purpose of your report is and make sure that every paragraph, every sentence, every word makes clear to that purpose.
Use language that is simple, complete, and unfamiliar at the beginning and at the end of every session. Check your writing acording to this principle “First, tell your readers what you are going to tell them, then tell them, and tell them wat you have told them”.
Make your report attractive to look at.

—Please do explain to me very well what evevry paraghraph means.

Image taken on 2008-12-17 16:20:35 by Travis Seitler. Image Source. (Used with permission)