k-points along high symmetry lines
 40  ! 40 intersections
Line-mode
rec
  0   0   0      ! gamma
  0.5 0.5 0      ! X

  0.5 0.5 0      ! X
  0.5 0.75 0.25  ! W

  0.5 0.75 0.25  ! W
  0   0   0      ! gamma
