http://pfpmd7dd5ijt4add2sfi4djsaij4u3ebvnwvyvuj6aeipe2f5llptkid.onion/ui3/chatFrame
The Lisa's (and Mac's) UI was inspired by the WIMP interfaces created at Xerox PARC but had some notable differences. One of these differences was that the XEROX systems used 3 button mice and the command idiom was via a popup menu, while the Lisa/Mac had one button mice which didn't afford popping up menus, instead commands were via menus that pulled down from the menu bar at the top.