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OpenMCL was renamed to Clozure CL several years ago. It was called OpenMCL, because it originally was an open sourced version of MCL, Macintosh Common Lisp.

The Up-Arrow is for textual navigation in the Listener window. Like in a normal text editor window, which it is based on.

A typical way to use the history in Clozure CL is to move with the cursor keys to the input of interest and press RETURN to have it copied to the current prompt.

To get the last things you typed, press option-p. 'p' as in previous. As in Emacs, since Clozure CL has an Emacs-variant (derived from called Hemlock) at its core. But written in Common Lisp.

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