PARMSCAN scans a set of batch file parameters to see if any of them
  contain a given string.  

  The format is:
    PARMSCAN string [parameters]

  For example, "PARMSCAN .REP %1 %2 %3 %4 %5 %6 %7 %8 %9" (w/o quotes)
  will scan all the available parameters for ".REP".  PARMSCAN does
  case-insensitive matching, so this line would also find ".rep", or
  ".Rep".

  PARMSCAN returns an errorlevel of 0 if "string" is found, otherwise it
  returns an errorlevel of 1.

  You can check for a match with "IF NOT ERRORLEVEL 1".  To see if there
  wasn't a match, use "IF ERRORLEVEL 1".  For the example above, you could
  use "IF NOT ERRORLEVEL 1 EXIT" (no quotes) to quit the batch file if
  ".REP" was in any of the parameters.

  Remember that, when DOS sets an errorlevel, it also sets all lower
  errorlevels.  That's why "IF ERRORLEVEL 0" can't be used to tell if
  "string" was in any of the parameters.

  If you're running a batch file from another application, and want to
  return to it if "string" isn't found, you can use "PARMSCAN %1 %1" 
  (again w/o quotes) to force an errorlevel of 0 to be returned to the
  application.  This may be needed if the application assumes that an 
  error occurred.

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  PARMSCAN.EXE and this documentation are Copyright (c) 1993 by David
  Harden.  All rights reserved.  PARMSCAN is Freeware, there is no charge
  for using it.

  You may copy and distribute PARMSCAN provided that PARMSCAN.EXE and this
  documentation are distributed in their original, unaltered forms.  You
  may not charge any fee for copying and distributing PARMSCAN other than a
  minimal fee to cover the costs incurred.

  You may bundle and/or include PARMSCAN with other software, as long as
  you include this documentation, and do not charge for it.

  There is no warranty of any kind, either express or implied, covering
  this software or this documentation.  The copyright holder is in no way
  responsible or liable for any losses or damages of any kind that may
  result from the use of this software or this documentation, or from
  inability to use them.