RIETICA question

Does anyone know how to tell Rietica to account for background (from sample holder, film, etc.) stored in separate file? Rietica can do it but there is no much about how to set it up in the manual. Thanks, Peter Zavalij

GFourier

Can somebody help me? I made a refinement and I would like to know what are the steps to plot the cristallites in GFourier program. Thank you so much. WEBMAIL - IFSC - Instituto de Física de São Carlos