1 EXHIBIT 99.1 OPTION NOTICE, ASSUMPTION AND SUBSTITUTION AGREEMENT THIS OPTION NOTICE, ASSUMPTION AND SUBSTITUTION AGREEMENT (the "Agreement") is made and entered into as of this __ day of December, 1997, by and among HARBINGER CORPORATION, a Georgia...Option Notice, Assumption and Substitution Agreement • December 8th, 1997 • Harbinger Corp • Services-computer programming, data processing, etc. • Delaware
