Alas, my curiosity has got the better of me. I definitely want to avoid the alphanumeric SHENANIGANS, but I'd like to know exactly what the source is, if it isn't the fertile mind of WH. Can somebody walk me through a couple so that I can work it out for myself, against my better judgement. Or, better still, just tell me, as the source is not part of the grid completion or the entry. Does it end in MUSEUM?