Dimensional Anchor

This is a block that loads chunks. There is a limit on the number of chunks each non-op player can load in SMP, and each chunk loader can load an adjustable area of 1x1, 3x3, 5x5, 7x7 and 9x9. 

GUI


Right clicking opens this GUI. If you are op (or in singleplayer) or the owner of the chunkloader, you can change the size of the loaded area without breaking and replacing it (which would make you the owner). The green button expands the area loaded by this chunkloader by one chunk, and the red button shrinks it by one chunk.

As you can see, there is a limit on the number of chunks that each player may force to be loaded. In singleplayer, or if the owner of the chunkloader is an op, there is no limit.



Trivia
Some players with computers that have more CPU power than graphics power report that using this to load a large area will reduce lag caused by a bad graphics card. The logic behind this is that if all the chunks in a 81 chunk radius of the Anchor is permanently loaded then it will stop the constant loading lag of new chunks.