Sausalito, California-based Autodesk Inc says its AutoCAD Release 11 is now available for Silicon Graphics Inc’s Iris Indigo computers under Irix 4.0.1: it features an X Window-based Motif user interface, superior networking capabilities including a floating network licence manager and Advanced Modeling Extension, the fully integrated solid-modelling option; it’s $3,500 plus $500 for the modelling module.