Export Columns Heading – take 2

hi, i understand you may be on the case but don’t have time to finish it off, but would it be possible to have at least some indication (a help doc page?) as to what data column A, B, C etc is stored in the exported file?

some of them are self-explanatory enough, but some aren’t (for me, column L, last in the exported CSV file).

thanks in advance, and thanks for the great plugin!