CLOSED TERMINALS, when one begins to identify, one has “closed terminals” too closely, and believes one terminal is another terminal. PAB 63) See also SNAPPING TERMINALS.
SNAPPING TERMINALS, the reason an engram comes into being and expresses itself on a preclear’s body is a lack of communication, the communication has become solid. It expresses itself as an engram, as a facsimile, as a lock, as a secondary. This expression comes about through absence of two-way communication. The moment that one runs two-way communication in upon the process, the spot has a tendency to go back to its original location. This is the phenomenon known as snapping or closing terminals. (PAB 51)
Hubbard, L. R., (1975) Dianetics and Scientology Technical Dictionary. Los Angeles: Church of Scientology of California Publications Organization.