What is the procedure you used to set and check the ignition timing?

What is the procedure you used to set and check the ignition timing?
hook up a timing light to cylinder 1 spark plug wire. disconnect vacuum advance hose on distributor. loosen distributor hold down bolt slightly. start engine. point timing light at the balancer/pulley on the front of the engine. the flashing will make it look like the line marked on it is standing still. turn the distributor slightly until you line up the mark with the correct notches on the timing indicator on the block. tighten distributor hold down. hook up vacuum advance. when you plug the vacuum advance back in you can watch the timing advance with the light to verify that it is working. remove the timing light.The above answer is correct for distributor equipped cars with balancer timing marks using cylinder #1 refrence. This virtually all early north American built cars.All other cars have very different procedure's. Any request for this info must have year make and model to get a correct answer