I have read the book, and did a search on here to no avail. In the APA, is it legal to place your tip under the edge of the cue ball and just raise it? Example- ob very near the rail, and cb very near the ob. Just raising your cue under the cb will make the cb go forward a hair, hitting the ob, making the ob hit the rail.
I know it's not legal by other rules, but what about the APA?