Revision ServicesKeep current with HUD changes! Subscribe to our revision service and receive automatic updates to your master book, policy and plan, and videos annually. In order to purchase the revision service, you must first purchase the master book, policy or plan, or video. Visit the NMA blog to view the calendar of revisions and check to see that you have the most recent revisions.To order a product via fax, fill out the PDF product order form and fax to 619.258.5791.NMA now offers revision services online! Access your revisions online within days of revision completion. No need to print or save — your revisions will be available online 24 hours a day, 7 days a week. Click here for details.