11.1. $tty
11.2. Meaning of $eos on TTY Streams
11.3. TTY-Specific I/O Bits
11.4. TTY-Specific PROCEDUREs
11.5. TTY-Specific Fields of $stream
11.6. Is My $tty Interactive?
11.7. Am I a Cooperative Child?
11.8. Half-Duplex TTY Streams
11.9. PTY Streams
11.9.1. PTY-Specific PROCEDUREs
11.9.2. PTY-Specific Fields of $stream