2013-10-28-01.29.30: Renamed <<before>> op to <<then>> because (1) <<before>> is used more often as a variable name (2) we have already appropriated if else elif fi as reserved words, so we might as well add <<then>> and have the complete set (3) principle of Least Surprise: programmers will be much less surprised to find that <<then>> has odd predefined semantics than to find that <<before>> does so.