In all the refinement software there always present option for the correction or fitting of the background of the XRD pattern using different method. So like other structure refinement software FullProf also has option for background correction. You can correct background during refinement or after refinement of the structure.
I have done the refinement, during refinement we do the background correction. My PXRD data has a hump at lower 2theta, to correct it i need background subtraction which is generally done in GSAS at the end( after the refinement). I need to know is this option available in FULLPROF