Some repetition is helpful, especially in longer documents
where readers need to be reminded of important facts or concepts. But
too much repetition is annoying and makes the document wordy.
Some don'ts concerning repetition:
- Don't repeat subject lines verbatim in the text.
- Don't repeat unimportant ideas.
- Don't repeat ideas in short documents.
- Don't repeat visually represented information
in text form.
- Don't repeat information in different forms if it
is clear in its original form.