10/20 standards equates to the technical manuals, they have a Preventative Maintenance Checks and Services done per the -10 level manual and the -20 level manual. IF (big if) done correctly, this should catch nearly all issues the vehicle has. Each of those 'gigs' must be worked off to declare the vehicle in 10/20 standards.
Back the the fact that if you own a piece of equipment, you should download ALL the manuals associated with it and learn how to properly use them. I get amazed at how many folks own large pieces of hardware and have no clue to see if they function properly before hitting the highway.