Apple Computer Inc has extended its X Window System offerings for its A/UX Unix with the launch of MacX 1.1 and X Window System 2.1. The new versions are compliant with the latest release, X11.4; MacX 1.1 is an X Window display server that runs under both Apple Macintosh and A/UX environments, conferring X Window compatibility while retaining full Macintosh functionality, and adds full support for cut and paste of both text and colour graphics between environments to the 1.0 release as well as offering up to three times the performance. It has full MultiFinder support, support for multiple monitors, and a built-in window manager that enables X applications to appear in Mac-style windows on the desktop. X Window System 2.1 includes both MacX 1.1 and X11, the latter only for experienced Unix and X customers requiring a standard X environment; it does not provide the Macintosh functionality in MacX, but provides client applications, developer tools and utilities to develop X applications. MacX 1.1 needs a Mac with 2Mb, at least two floppy drives and Mac System 6.0.4 or later. X Window System 2.1 for A/UX is for any Mac II or the SE/30 with a mini mum 4Mb – 5Mb recommended, 80Mb hard disk, 160Mb recommended, and A/UX 2.0 up. They are all due to ship at the end of the month, at $300 for MacX for MacOS. The X Window System 2.1 for A/UX is $350, plus $55 for a right to copy, $200 for the manuals and $4,000 for a full site licence.