Has anyone seen this: http://www.flex-tek.com/ It would be an interested project for this list to clone this product in the public domain. It's got all kinds of useful features that are related to questions that have arisen here in the past. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral@lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causae scire" ================================================================