The search results were thus: The ones around file and array appending are matching on just the stem of the word, so that's legit. But I was wondering what the sleep function might be appending to, so checked: https://docs.lucee.org/reference/functions/sleep.html - no mention of anything to do with "appender" or anything related. Not even the sequence of letters "app" I checked more: https://docs.lucee.org/reference/objects/array/resize.html - nope https://docs.lucee.org/reference/functions/wrap.html - mentions wrAPPing and APPlications, but those should not be matches (and I doubt they are) https://docs.lucee.org/reference/functions/writedump.html - nope. I checked in the source too, and nothing hidden in the mark-up So... is there an issue with your indexing?