Get reader for password entry
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 Syntax

        GT_GRPassword( oGet , aGetExitKeys )

 Arguments:

      oGet         - GET object
      aGetExitKeys - Array of keys that can cause exit from GET

 Returns:

      .F.

 Description:

      A GET reader for password entry.  Any keys pressed are placed in
      cargo and a block character is output to the screen.

 Examples:



 Header File: GT_LIB.CH

 Source: GRPASSWO.PRG

 Author:  Martin Colloby