Auto Tool
One of my (zer0's) personal favorite features in a lot of blatant clients, Auto Tool takes the brain out of playing the game. Simply hold left click and Whiteout will switch to the best tool for the block. Are you a silk touch kinda guy? Well, you can even set it to prefer using silk touch over fortune.
Switch Delay
The delay applied before switching hotbar slots.
Prefer Silk Touch
If a block can be broken with a silk touch tool, and there is a silk touch tool in your hotbar that may not necessarily be faster than the efficiency enchanted tool that is also in your hotbar; Auto Tool will select the silk touch tool instead.
Pickaxes
Allow automatically switching to pickaxes.
Axes
Allow automatically switching to axes.
Hoes
Allow automatically switching to hoes.
Shears
Allow automatically switching to shears.
Shovels
Allow automatically switching to shovels.
Swords
Allow automatically switching to swords (this applies to blocks only, like cobwebs. Not entities, see Auto Weapon for that.)
Attack Required
Requires your in-game attack keybind to be pressed for the module to enable. Refer to the Core Features tutorial for more info.