Ashlar Inc, Sunnyvale, California is now shipping its Ashlar Vellum computer-aided design package for the Apple Computer Inc Macintosh SE/30 and Macintosh II line of computers: Vellum includes the company’s Geometric Inference Engines, which enable technical professionals to perform precision drafting as easily as freehand sketching or drawing, Ashlar claims; it needs 4Mb and a hard disk and is $1,000.