I don't remember the name, but I recognize the face Common Lisp defines 978 symbols. Whatever implementation you use probably defines hundreds of additional symbols for language extensions, additional libraries, a graphical user interface, etc. Your Lisp implementation may produce output that looks somewhat different from that shown here. Generally, you'll see the symbol names listed with a very brief description of the global object named by the symbol. Again, your Lisp implementation may produce somewhat different results, but it should show you a list of symbols with package prefixes, plus whatever other information the designers of your implementation thought would be helpful yet concise.
Some implementations perform a case-sensitive match, while others ignore case.
Symbol names are case sensitive in Lisp, but the Lisp reader translates symbols to uppercase by default. The only disadvantage of this is that these partial symbols pollute the namespace of the current package. These are all correct, but you get what you ask for. The first is an object for which you wish to retrieve documentation, or a symbol naming that object. The interface described above is the one required by the ANSI Common Lisp specification.