EOT

1. Short for End-Of-Transmission, EOT is commonly used in Unix and programming environments. EOT may also be illustrated as <EOT>. The EOT is achieved by inserting an ASCII sequence of 4. To enter this value, hold down your ALT key on the keyboard and press the number 4 on your numeric pad. Once this has been pressed, let go of both buttons.
2. Short for End of Topic, EOT is shorthand sometimes used in chat based communication. Below is an example of how this could be used in chat.

Well ok, that's the EOT, what should we talk about now?

Also see: Chat definitions