<oerjan> le/rn bimonthly//The word "bimonthly" has at least two meanings, although this wisdom only gives about half of one. No matter which expert you follow, you\'re 50% likely to misinterpret it, or doubly so, depending on the phase of the moon.

Postorder is the same as Polish notation, since Post was Polish. Not to be confused with reverse Polish notation, which is postfix.