A sample configuration for Emacs can be found here.
Use CMD as the META button
Copy this snippet into ~/.emacs.d/init.el somewhere into the existing file.
(setq mac-command-modifier 'meta
mac-option-modifier 'none
default-input-method "MacOSX")Start REPL: M-x cider-jack-in
Load the full file to REPL: C-c C-k
Execute command with cursor at the end of a bracket: C-c C-p or C-x C-e
Save the current buffer to its file (save-buffer): C-x C-s
Cut (really kill): C-w
Copy (really kill-ring-save): M-w
Paste (really yank): C-y
Split the selected window into two windows, one above the other (split-window-vertically): C-x 2
Split the selected window into two windows positioned side by side (split-window-horizontally): C-x 3
Jump between open windows: C-x C-b
Close Emacs: C-x C-c