1.30 How do I specify the plane of k-points when I set the flag q2d=.TRUE.?

In this case you must give three k points: 3#3 , 4#4 , and 5#5 after the INPUT_THERMO namelist. 3#3 is the origin and the two vectors 6#6 = 4#4 - 3#3 and 7#7 = 5#5 - 3#3 determine the plane

8#8 = 9#9 + 10#1011#11 + 12#1213#13, (1.1)

where 014#1415#1514#141 , 014#1416#1614#141 . The interval of 15#15 is divided into n₁ points, while 16#16 is divided n₂ points, where n₁ and n₂ are the weights of the points 4#4 and 5#5 . An example of the input for determining the plane is:

3
k_{x,1}  k_{y,1}  k_{z,1}  n0
k_{x,2}  k_{y,2}  k_{z,2}  n1
k_{x,3}  k_{y,3}  k_{z,3}  n2

where the k points are given in cartesian coordinates in units of 217#1718#18a ( a is the lattice constant celldm(1) or in crystal coordinates using q_in_cryst_coord=.TRUE. in the INPUT_THERMO namelist. n₀ is not used and can be set to any integer value.