Evaluate the current input in Lisp if it is complete. If incomplete, open a new line and indent. If a prefix argument is given then the input is evaluated without checking for completeness.
Close any unmatched parenthesis and then evaluate the current input in Lisp. Also bound to M-RET.
Indent the current line and perform symbol completion.
Open and indent a new line.
Go to the beginning of the line, but stop at the REPL prompt.
Interrupt the Lisp process with
Clear the entire buffer, leaving only a prompt.
Remove the output and result of the previous expression from the buffer.