A TCC window displays a prompt when it is waiting for you to enter a command. The actual text depends on the current drive and directory as well as your PROMPT settings. (The default will look something like [c:\] ). This is called the command line and the prompt is asking you to enter a command.
This section explains the features that will help you while you are entering commands, how keystrokes are interpreted when you enter them at the command line, and how to transfer text between TCC and other applications.
Some of the command line features documented in this section are: