[Wannier] choice of kslice vectors in the BZ in example-18 of wannier90

[Bhargab Kakati]

Dear all,

I am trying to understand why the example-18 of wannier90 chose the 
kslice vectors as kclice_b1 = 0.5 -0.5 -0.5 and ksclice_b2 = 0.5 0.5 0.5 
for Ky=0 plane (010 plane). From my understanding, the Ky=0 plane should 
be defined by the vectors kclice_b1 = -0.5 0.5 0.5 and ksclice_b2 = 0.5 
0.5 -0.5. Please help me understand this and correct me if I'm wrong.

Thank you.