It was developed at Xerox PARC as a way to run the software originally developed for their Xerox Alto, Xerox Star and Xerox Daybreak 6085 specialized workstations on Sun Microsystems workstations and IBM PC-based platforms.
The software was devised at Xerox PARC to operate programs initially designed for the Xerox Alto, Xerox Star, and Xerox Daybreak 6085 workstations on Sun Microsystems platforms and IBM PC-based machines.