Know your audience. Write to your average reader. Do not write to the experts, lawyers, or advocates unless they are your intended audience.
It is important to use short sentences as often as possible. The longer and more complex a sentence, the harder it is for readers to understand.
When writing notices:
Write at the sixth to eighth-grade reading level.
Use an average sentence length of no more than 15–20 words.
Use no more than seven lines per paragraph.
Use short, common words whenever possible.
There is another POMS issuance on the font and font size to use in notices, as well as the type of paper to print the notices on.