A. Helpers

/*
   Some of the libraries used:

   * http://home.interlog.com/~ptjm/software.html
     
     REXXUtil      General Purpose Utilities
                   - System Information
                   - Basic Console Control
                   - File / Directory Manipulation

     REXXMath      Common Mathematical Functions
     RxHash        Associative Array Support
     REXXRe        Regular Expressions 

   * http://rxsock.sourceforge.net/index.html
     RxSock        TCP/IP Sockets

   * http://rexxsql.sourceforge.net/index.html
     REXX/SQL      SQL Library

   * http://rexxtk.sourceforge.net/index.html
     REXX/Tk       TK Toolkit

   * http://rexxcurses.sourceforge.net/index.html
     REXX/Curses   Curses Toolkit

   /* ----------------------------- */

   A REXX script is assumed to commence with the following lines:

     options 'STRICT_ANSI' ; trace 'OFF' ; signal on NOVALUE

     FALSE = 0 ; TRUE = 1 ; NULL = "" ; SPACE = ' ' ; NEWLINE = "0A"X
     NaN = "NaN"

     globals = "sys. env. args. $. FALSE TRUE NULL NEWLINE SPACE NaN"

   /* ----------------------------- */

   REXXToolkit routines [when documented] will appear here

   /* ----------------------------- */

*/