Ian Knot = Ian's Fast Shoelace Knot. I tie my shoelaces with my own Ian Knot, the World's Fastest Shoelace Knot: Make a loop with both ends and simultaneously pull them through each other to form an almost instant knot. It's a truly revolutionary way to tie your shoelaces! Recommended!
Text telephone (TTY) mode is used for text communication over a telephone line. A TTY device must be connected to the computer to interpret the modified audio; otherwise you might experience poor audio quality during the call. Using TTY mode in a conference call might also cause audio quality issues. By default, TTY mode is turned off. You can turn on TTY mode by clicking Phones in the Lync - Options dialog box. You will then need to sign out of Lync 2010 and sign back in to use the feature.
/dev/tty is a special file, representing the terminal for the current process. So, when you, your message ('1') will appear on your screen. Likewise, when you cat /dev/tty, your subsequent input gets duplicated (until you press Ctrl-C).