WordPress introduced pointers just a couple versions of WordPress ago. They’ve pretty quickly gained adoption by some popular plugins. I hesitantly link to this post on Paulund that shows you how to make a plugin pointer, because I think they’re very rarely appropriate. Like pointing in real life, pointers in plugins can easily be rude, distracting, inconsiderate, or just not the best choice. If you make a plugin pointer, please ensure there is not a better way to express your, well, point.