After a permit application is accepted by the City, the plans are reviewed by City Plans Examiners to ensure conformance with applicable codes. If there are items missing on the plans, or if changes need to be made to ensure conformance with codes, those comments are sent back to the primary contact in the form of an emailed letter, also called a “redline” or “comment” letter. Some projects are approved after one review, but more commonly, projects go through several rounds of review and redline comments before they are approved.