4x4x4 Comment
0 0 = automatic generation of k-points
Monkhorst M use Monkhorst Pack
4 4 4 grid 4x4x4
0 0 0 shift (usually 0 0 0)

Example file
4
Cartesian
0.0 0.0 0.0 1.
0.0 0.0 0.5 1.
0.0 0.5 0.5 2.
0.5 0.5 0.5 4.
Tetrahedra
1 0.183333333333333
6 1 2 3 4

k-points along high symmetry lines
10 ! 10 intersections
Line-mode
cart
0 0 0 ! gamma
0 0 1 ! X
0 0 1 ! X
0.5 0 1 ! W
0.5 0 1 ! W
0 0 1 ! gamma