Write to standard output on Windows and Linux

WriteToStandardOutput.p

/**
 * Have a procedure print Hello World on the Command Line.
 *
 * On Windows: prowin -b -p OutputToCommand.p | tee
 * On Unix (DLC needs to be set): _progres -b -p OutputToCommand.p | tee
 *
 * tee is a command in command-line interpreters using standard streams which
 * reads standard input and writes it to both standard output and one or more
 * files, effectively duplicating its input. It is primarily used in conjunction
 * with pipes and filters.
 */

 PUT UNFORMATTED "Hello world" SKIP.