abbreviation for Folder Error Summary: a complete summary of the errors which have been made in the auditing and handling of a preclear's case as found in a thorough review of the preclear's folder (record of all the auditing actions and other handlings taken on a preclear), along with notations of what actions were taken to correct specific errors. An FES is done to provide the Case Supervisor with information from which a program (series of actions designed to bring about definite results in a preclear) can be done. See also preclear and C/S in this glossary.—TR 4 Film Approved Glossary