SACHNOFF & WEAVER LTD. 30 SOUTH WACKER DRIVE SUITE 2900 CHICAGO, ILLINOIS 60606-7484 EXHIBIT 8 May 28, 1997 Enterprise Systems, Inc. 1400 South Wolf Road Wheeling, IL 60090-6524 Attn: Glen E. Tullman Re: Agreement of Merger dated March 13, 1997...Agreement of Merger • May 29th, 1997 • Hbo & Co • Services-computer integrated systems design
