9    CHANGED: Miscellaneous error handling
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      Improved error handling in many Clipper commands
      and functions traps and reports missing arguments
      or invalid arguments passed to them.

      One notable example is DBEVAL(), which now produces
      an argument error if the first parameter is
      missing.  This is notable because the original side
      effect has been used as follows:

      DBEVAL( , , bWhile )

      This produced the same results as LOCATE WHILE, but
      operated more slowly.  This code should be replace
      with the appropriate LOCATE WHILE command.