incantationAny particularly arbitrary or obscure command that one must mutter at a system to attain a desired result. Not used of passwords or other explicit security features. Especially used of tricks that are so poorly documented that they must be learned from a wizard. "This compiler normally locates initialised data in the data segment, but if you mutter the right incantation they will be forced into text space."
in-band signalling ♦ inc ♦ incantation ♦ include ♦ include war ♦ inclusive
Try this search on Wikipedia, Wiktionary, Google, OneLook.