Minecraft Bounding Box Outline Mod [1.6.4/1.6.2]

 Bounding Box Outline is a mod that outlines component bounding boxes of nether fortresses and other structures. Those are important because they directly influence the spawning of Wither Skeletons/Witches.
Install the mod and press F3 + N to toggle the outline.
Use F3 + M to reload the ...
Minecraft Bounding Box Outline Mod [1.6.4/1.6.2] - http://www.8minecraft.com/bounding-box-outline-mod/