Usage:
F4 + 'H': Toggle the mod on or off.
F4 + '=': Increase the check range by one (Max. 64).
F4 + '-": Decrease the check range by one (Min. 10).
F4 + 'M': Change checking mode.
F4 + 'N': Alternate color.
F4 + 'Y': Ignore render depth; "see-through" mode.
F4 + 'B': Toggle bounding-box check.
F4 + 'C': Toggle mob mode.