[Wien] Calculating the effective U in APW methods. NiO

[SOHAN LAL]

Dear Wien2k users,
     I am new in Wien2k code. I want to calculate the effective U for NiO. I want to know, how to put the constrained number of d electrons in the core. Ni2+ has 8 d electrons. Then, two calculations are done one with 4.5 up, 4 dn   electrons, and second one with 4.5 up and 3 dn constrained d-electrons. I want to know how to make the NiO.incup and NiO.incdn files for  4.5 up and 4 dn constrained d-electrons. For examples: NiO.incup                                                                 NiO.incdn7  1.00                                                                               7 1.00
1,   -1,  2                                                                            1,  -1,   2
2,   -1,  2                                                                            2,  -1,   2
2,    1,  2                                                                            2,   1,   2
2,   -2,  4                                                                            2,  -2,   4
3,   -1,  2                                                                            3,  -1,   2
3,    2,  4                                                                            3,   2,   4
3,   -3,  5                                                                            3,  -3,   4  
I think, there are 7 orbitals (1s, 2s, 2p, 2p, 3s, 3p, 3p) and last column is the occup. number. Now, I want to know how 4.5 up and 4 dn d electrons are included here. Also, how NiO.incup and NiO.incdn files are different from NiO.inc because the filling of orbitals are looking same for these files. For Ni2+, the total number of electrons are 26. How these electrons are filled in these core orbitals for both up and dn. Please shed a light on this.   
Thanks & RegardsSohan LalPh.D Scholor IIT Mandi 
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