S-Plus is a premier high-end tool for exploratory data analysis and statistical analysis as a way to understand the structure of multivariate data. Based on the object-oriented S language first developed at AT&T's Bell Laboratories (now Lucent Technologies) as a flexible environment for data analysis, S-Plus has been one of the most popular tools for research scientists, statisticians, and sophisticated business analysts for 10 years. With the release of Version 4.0, MathSoft has made the software much more accessible to a much wider Program: S-Plus, Version 4.0 Source: MathSoft, Inc. Data Analysis Products Division 1700 Westlake Avenue North, Suite 500 Seattle, WA 98109 Tel: 800-569-0123; fax: 206-283-8691 Email: mktg@statsci.com Web: http://www.mathsoft.com System: Windows 3.1x, Windows 95, or Windows NT 80486 processor running at 66 MHz or higher, with 32 MB RAM and math coprocessor, 80 MB available hard disk and one CD-ROM drive, VGA or higher graphics adapter Price: Prices available directly from the company