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- Version 1.4 of CMD introduces a major change in prompted
- operation -- CMD now reinvokes itself after each command until an
- empty command line (a RETURN alone) or a Control-C is entered.
- Control-C also exits the current shell (if any) as in Version
- 1.3. In this way, CMD can act like an MS-DOS or UNIX "secondary
- shell" invocation for true Z-System shells as well as for "ZCPR2-
- style" shells like MEX with MEX2Z or Sage-modified WS4.