It is somewhat clear to me, looking at the grammar, that COLLATE is an odd duck when considered only as an operator. So I am not surprised to see its grouping described in text rather than in a table which, absent such oddness, conveys fairly simple and commonly understood information. I am as fond of tables as anybody when there values can be treated alike, without special distinction (for the purpose of the table.) But I find that the advantage of such presentation is lost when distinction must be made among what *look* like similar entries. So I would dispute "nice unified". The unification would come at the cost of complicating what can accurately be said about the entries, and that falls into the "not nice" column, IMO.