One of the most effective marketing tools in a retailer’s arsenal is signage. Hatco’s do-it-yourself online signage program helps customers sell more products and increase their margins. The Web site www.hatcographics.com allows Hatco equipment owners to build custom signage. Log in and follow the step-by-step instructions for Hatco’s Flav-R-Fresh and Flav-R-Savor display cabinets, as well…