Once connected, these are not the prompts you get. You will then be asked to enter your user identification and password as a security measure. Preceding the OK, will be the systems opening message. The 'OK,' denotes that last command was executed properly and it is now waiting for your next command. This prompt is usually preceded by an error message.
Some terminals have certain characteristics that are built in to the terminal.
Stops the scrolling of the output on your terminal for viewing. Resumes the output scrolling on your terminal for inspection. The logical end of line character. The semicolon is used to enter more than one command on one line. The HELP system is keyword driven.