Awkward or difficult-to-remember keyboard shortcuts become fast & easy via programmed macro keys. This can be a real lifesaver for reducing wear & tear on your hands and wrists. Programmability lets you trigger a keyboard shortcut or type a string of text, with just a single keystroke.
It still has all the great features of the original Ergo Pro - tactile feedback, greater comfort, faster typing speeds, and quiet operation - but now it's also programmable.