ecm> It is annoying to have to read (emacs-version) before being ecm> able to bind something like the middle mouse button ([mouse-2] / ecm> [button-2]). sb> (define-key something-map [mouse-2] 'some-function) sb> and sb> (define-key something-map [button2] 'some-function) indeed they do; my apologies. I was led astray by code I had read which seems to be outdated; eg (define-key custom-mode-map (if (string-match "XEmacs" emacs-version) [button2] [mouse-2]) 'custom-push-button) -- Eric Marsden