Preprocess

A batch column set-up step: configure several columns at once — for each, recode values, set its type (Nominal / Ordinal / Numeric) with an ordinal order, rename it, give it a colour tag, or mark it for removal. Think of it as doing many Transform Column edits in one place; handy right after import to tidy a whole dataset. (It won’t remove every column — at least one is always kept.)