NAME: choice_select - processes string port into choice list

  Type: (Input) (Subroutine) 
  Language: C
  Author: Ian_Curington, Advanced Visual Systems, Inc. 
  Input:  String Input port
  Output: string port
          integer port
  Parameters:
          Choice List browser

  Description:
  ------------
  This module takes a string input port, reconfigures
  a choice list parameter based on the strings and
  separators in the input port, then outputs the
  sub-string on a string output port, along with
  a zero-based integer from the index down the
  choice list.