Keep it concise, keep it genuine and avoid repetition.
Times, Sunday Times (2016)
The aim is to stay on the beat, switch smoothly between moves, and avoid repetition.
Times, Sunday Times (2006)
Keep covering letters of application short and to the point; avoid repetition of what is on the form or CV.
Fletcher, Clive How to Face Interviews (1981)
In the interests of saving space and to avoid repetition, I shall give the " coming out script "only once.
Austin, Valerie Self-Hypnosis (1994)