You can build keyboards with arrow keys. IIRC the keyboards from TI for their Explorer Lisp Machines had arrows, etc. Even with Genera you can use arrow keys. You can configure a new keyboard layout and use that for your keyboard. Genera can for example be used over X11 or on the MacIvory. There keyboards typically have arrows and Genera knows about them...
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You can build keyboards with arrow keys. IIRC the keyboards from TI for their Explorer Lisp Machines had arrows, etc. Even with Genera you can use arrow keys. You can configure a new keyboard layout and use that for your keyboard. Genera can for example be used over X11 or on the MacIvory. There keyboards typically have arrows and Genera knows about them...