Board Thread:Questions and Answers/@comment-5885468-20121219195535/@comment-1757231-20140805170716

LegendaryZX wrote: Correction: I was stupid and realized the key was F12 not F9. The particles show now but the chunk still doesn't stay loaded! Next time, start a new thread instead of adding on to an old thread.

If you're playing Singleplayer, it's quite worthless; it only works on SMP. Should you be on a public server, they might have plugins which disable the affects of a World Anchor. You can press F9 TWICE to see the chunk boundaries around you; Green means loaded, and Red means unloaded.