You’ve been in trouble and your taking a drop – back-on-the-line or stroke and distance. You used to have to drop on the line, or as close as possible to the point from where you had previously played. Now you have a Relief Area within 1 club length of these Reference Points (& of course not nearer the hole than).
Much of the time it won’t make much difference, but 1 club length could get you out from behind a tree, maybe out of the rough and on to the fairway, or on to a flatter lie and stance.
Use your Relief Area to make your next shot as easy as possible!