Alter is shorthand for alternate personality. A dissociated part of the mind which has a separate identity and is given cue codes by Programmers to trigger that dissociated part of the mind to come to the front of the mind. The part’s identity may be a gem, rock, a tape recorder, a poodle, a white kitten, a dove, a horse, or even think of itself as a person or a demon. It all depends on the programming. It is generally the main term used to reference any personality within a system of personalities.