CLEO Help Notes: The Copy application file set file definitions will copy all file definition records associated with a specified application file set from one library to another. Both the "from" and "to" libraries must be EXTOL system files libraries. This command is useful for copying file set information from (for example) test to production libraries on the same system. To save application file set records or to send them to another system, see the SAVFS and SNDFS commands.