4.1. Making STREAMS Available to a MAINSAIL Program:
the STRHDR Intmod and $initializeStreams
4.2. Automatically Opened Streams: $tty and $parent
4.3. The CLASS $stream
4.4. Opening and Closing Streams:
$openStream and $closeStream
4.4.1. $openStream
4.4.2. $closeStream
4.4.2.1. Detecting When a Child Process Has Exited