2.1 Starting up Lisp

2.1.1 Entering Lisp

You can enter Lisp by typing the commandlisp at the operating system prompt:

 % lisp

After executing its initialization routines, Lisp responds with a prompt:

The prompt indicates that Lisp is ready to read and evaluate any expression that you type at the terminal. After evaluation, Lisp displays on the screen a response that is immediately followed by another prompt. This routine is known as the read-eval-print loop, or the top-level loop. While operating in this fashion, Lisp is said to be at the top level.

The User's Guide - 9 SEP 1996

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