I am familiar with the popLA package for processing and plotting textures and the creation of .DFB files for theoretical defocusing and background correction. Now, I am trying to use ATEX (fantastic software, by the way) to plot XRD pole figures but I need help with the analytical defocusing correction option. Could someone tell me what do the parameters Col. and Slices mean? I guess the Col. would be the angular divergence of the collimated beam, but I am not sure. Is there a manual or help file for this software? The help videos are useful but some of these details are missing. I used a Panalytical Diffractometer and imported the .xrdml files.