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 FUNCTION PARSFIELD()

  Short:
  ------
  PARSFIELD() Extracts the name of the field from an expression

  Returns:
  --------
  <cField> => name of the field

  Syntax:
  -------
  PARSFIELD(cExpress)

  Description:
  ------------
  Returns the field name part of cExpress

  Examples:
  ---------
   cExpr := "CUSTOMER->LASTNAME"

   IF ISFIELD(cExpr)
     ?PARSALIAS(cExpr)  // displays CUSTOMER
     ?PARSFIELD(cExpr)  // displays LASTNAME
   ENDIF

  Warnings:
  ----------
  Does not verify if this is a valid field. Use
  ISFIELD().

  Source:
  -------
  S_FIELDS.PRG