Principles of Design. CRAP or PARC. The PARC or CRAP principles. Proximity; Alignment; Repetition; Contrast. Proximity. Group related items together. Title: C.R.A.P. Design Principles Author: Lisa Dawley Last modified by: Dan Beltramo Created Date: 9/20/ AM Document presentation format – A . Contrast Contrast helps us to differentiate items on a page. There is a variety of ways to provide contrast Monday Night Concert Series Bill Zehfuss, trombone.