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 FUNCTION SMALLVALID()

  Short:
  ------
  SMALLVALID() Uses SMALLS() lookups in a VALID condition for a GET

  Returns:
  --------
  lValid  => logical value

  Syntax:
  -------
  SMALLVALID([bValid],expDisplayString,[cTitle],;
     [expAlias],expReturn,[expStartRange,expEndRange],[bException])

  Description:
  ------------
  Uses SMALLS() in a VALID condition for a GET. See
  SMALLS() for description of parameters <expDisplayString>
  through [bException]

  If the user selects a value from the SMALLS() lookup,
  a value of True is returned, allowing the next GET to be made
  active. Otherwise, a False is returned. The return value is also
  determined by [bValid]

  [bValid]  -  This is a code block that determines if
  the current get is already valid. If this is passed, it is first
  evaluated, and, only if the current get is NOT ALREADY VALID,
  SMALLS() is called with the SMALLS() parameters given. If this
  is not passed, SMALLS() is called automatically. IF this is
  passed and the GET is valid, a True is returned, allowing the
  next GET to be 'gotten'.

  Examples:
  ---------
   @3,0 GET V3 VALID  ;
       SMALLVALID({||!EMPTY(V3)},"LASTNAME",nil,5,"LASTNAME")

   // This will pop up a smalls() lookup table when attempting to exit
   // the get 'V3' where 'V3' is empty. A SMALLS() lookup is  called, with
   // smalls() parameters provided, and, if CR is pressed, the GET is fed
   // or assigned the lookup value. (depends on value of <expReturn>)
   // If 'V3' is already valid, a True is returned, and the next GET is made
   // active. If SMALLS() is called and CR is pressed while in SMALLS(),
   // a True is returned. Otherwise a False is returned.

  Notes:
  -------
  See Smalls() for a complete parameter description.

  Source:
  -------
  S_SMGETS.PRG