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### 9.10 What if I don’t have an `Escape` key?

Type `C-[` instead. This should send ASCII code 27 just like an Escape key would. `C-3` may also work on some terminal (but not under X). For many terminals (notably DEC terminals) `F11` generates `ESC`. If not, the following form can be used to bind it:

    ;; F11 is the documented ESC replacement on DEC terminals.
    (define-key function-key-map [f11] [?\e])