I wrote:
> Not sure if we want to consider dropping down to two columns, but in any
> case I'd say a minimum requirement is at least two spaces between one
> command and the one beside it (not one space, since we have multi-word
> commands).
Actually, it seems to look all right with only one space as long as the
column margins are never violated --- the column alignment provides
enough visual cue. Patched accordingly.
regards, tom lane