Function: lisp-interaction-mode

Major mode for typing and evaluating Lisp forms.
Like Lisp mode except that M-x eval-print-last-sexp evals the Lisp expression
before point, and prints its value into the buffer, advancing point.
Note that printing is controlled by `eval-expression-print-length'
and `eval-expression-print-level'.

Delete converts tabs to spaces as it moves back.
Paragraphs are separated only by blank lines.
Semicolons start comments.

key binding
--- -------

C-j eval-print-last-sexp
ESC Prefix Command
DEL backward-delete-char-untabify

C-M-i completion-at-point
C-M-q indent-pp-sexp
C-M-x eval-defun

C-M-q indent-sexp
(that binding is currently shadowed by another mode)
Entry to this mode calls the value of `lisp-interaction-mode-hook' if that value is non-nil.