And Silicon Graphics is coy about its relationship with IBM Corp now that it appears IBM will drop the graphics extensions Silicon Graphics has supplied for the AIX RS/6000 family in favour of Evans & Sutherland Computer Corp technology (CI No 1,721), but says that it was not a big part of its business anyway; it has signed up for AutoCAD, WordPerfect, Adobe Illustrator, Interleaf and Informix Wingz software for the Indigo, along with computer aided design applications from Cadence Design Systems Inc and Ecad Inc; its first UK customer is the University of Leeds School of Computer Studies which is switching from a Digital Equipment Corp VAX strategy and is taking 60 Indigos for undergraduates to play with.