Where:
- fwt is a string
- phwt is a string
- is_for_diff_map_flag is an integer number
set the expected MTZ columns for Auto-reading MTZ file.
Not every program uses the default refmac labels ("FWT"/"PHWT") for its MTZ file. Here we can tell coot to expect other labels so that coot can "Auto-open" such MTZ files.
e.g. (set-auto-read-column-labels "2FOFCWT" "PH2FOFCWT" 0)