an auditing procedure which closes off the process one is running, maintains ARC, and opens up the new process on which one is about to embark. It is used so that a pc will not be startled by change, for if one changes too rapidly in a session, one sticks the preclear in the session every time. He is given some warning, and that is what a communicationbridge is for. —Fundamentals of Thought Glossary Final approval 5.2.90