Syntax:  SET PACKAGE PARAMETER EXPAND text_string defined_package

  Prefix of a text processing utility (TPU) routine to define the
  expansion of parameters in this package.

  When you expand a parameter in a language associated with this
  package, LSE uses a TPU procedure named by this string followed by
  the language name to generate a placeholder for this parameter.

  Be default, this value is LSE$PKG_EXPAND_PARM.  LSE provides a TPU
  parameter expansion routine for the languages shipped with LSE.  For
  example, LSE$PKG_EXPAND_ PARM_COBOL is provided to expand parameters
  for COBOL routines.