Rules vary somewhat by locale, but in general: https://www.insd.uscourts.gov/sites/insd/files/local_rules/Local%20Rule%205-1%20-%20Format%20of%20Documents%20Pr

Rules vary somewhat by locale, but in general: https://www.insd.uscourts.gov/sites/insd/files/local_rules/Local%20Rule%205-1%20-%20Format%20of%20Documents%20Presented%20for%20Filing_0.pdf https://www.insd.uscourts.gov/sites/insd/files/local_rules/L... There is a method to the madness. Double spacing allows for manual markup and edits, for example.