ANy 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."