My code uses ent_pvs() a lot for gameplay, AI and effects but it broke when I changed the view rendering chain recently. ent_pvs only lists the entities of the last rendered view so "this week's tip" deals with ent_pvs for multiple views:
http://opserver.de/swik10/index.php?title=Ent_pvs


"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual

Check out my new game: Pogostuck: Rage With Your Friends