SLIME, the Superior Lisp Interaction Mode for Emacs, is an Emacs mode for developing Common Lisp applications. SLIME originates in an Emacs mode called SLIM written by Eric Marsden. It is developed as an open-source public domain software project by Luke Gorrie and Helmut Eller. Over 100 Lisp developers have contributed code to SLIME since the project was started in 2003. SLIME uses a backend called Swank that is loaded into Common Lisp.

— Wikipedia on SLIME

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C-x o

Window-Move to other

C-x C-e

Evaluate last expression

C-c C-r

Evaluate region

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2018.10.19 Friday (c) ACHK