  MTEXCH is a utility for copying files to and from a magnetic tape.
  The tape records may be blocked.  Parameters on the command line 
  specify the block and record sizes and formats for both tape and disk
  files.  Each record in the input file generates one record in the output
  file.  Each input file creates one output file.  Input files can be
  specified using wildcard notation.  No file name information is assumed
  for the tape (unlabeled).




  Command syntax:
	outfile/sw = infile/sw
  where:
	outfile - file spec for output file
	infile  - file spec for input files, separated by commas
	sw      - one or more of the following option switches.
		  switches may be shortened to the shortest unique
		  abbreviation.
		ASCII - Tape file is/should be in ASCII (default)
		EBCDIC - Tape file is/should be EBCDIC
		BLOCKSZ:nnn - number of bytes in a block (Will be overriden
			      by actual blocksize for volume)
		RECLEN:nnn - number of bytes in a record (Ignored for disk
			     input file.)
		FIXED - records are fixed length (default for tape)
		VARIABLE - records are variable length with 2 byte binary
			   length (default for disk)
		FB - blocks are fixed length with integral number of
	     	     records.
		CR - Set CR carriage control attribute for file (default)
		FORTRAN - Set FTN carriage control attribute for file
		REWIND - Rewind the magnetic tape.  Takes precedence over 
			 SKIPF.
		SKIPF:[-]n - Skip the tape forward [backward] n files.


  Record/block format information is ignored for files being read from
  disk.  Blocking information is ignored for files being written to disk.
  If conflicting switches are specified for a file, the last one encountered
  is used.


  Program is installed with the following commands:
	$MACRO MTEXCH
	$LINK MTEXCH


  Program is run by:
	$RUN MTEXCH
	*    enter command strings
	*  ^Z to terminate
  Commands are read from SYS$INPUT and messages written to SYS$OUTPUT.


  Written by: Gary Grebus
	      Computer Center
              Battelle Columbus Labs
	      505 King Ave.
              Columbus, Ohio  43201


