MCOPY

##
MCOPY

            [MRTCAL\]MCOPY [IN|CURRENT] /FILE IndexFile

        Copy the named index (default current) from memory to the given file  to
        disk.  Any  pre-existing  file  is  overwritten, except that you can not
        overwrite one of the input index files involved during this operation.

        This command is useful for a few main purposes:
          - extract a subset from an index file, by combining the commands INDEX
            OPEN, MFIND (with criteria), and MCOPY,
          - merge  several  index  files,  by combining INDEX OPEN, INDEX APPEND
            (repeated), MFIND, MCOPY,
          - convert an old format file to latest format, simply by using INDEX
             OPEN, MCOPY IN.