Mr. DiStefano, I hope the following information is helpful to you. There is a flyer and brochure package which details all the information on the XyWrite 4.0 product available through the Technology Group in MD. Please contact them at 410-576-2040 or fax 410-576-1968. Our marketing folks have moved down there, as have all marketing materials. Also, make sure they have your current address in their database, as you should have recieved the mailing last week. The long and short of it is that XyWrite 4.0 is the Signature base engine with a host of XyWrite III+ compatibility settings, added support for Orbis (text search/retrieval) and IBid (bibliography database). There have been performance enhancements to the engine, and support for the old Microlytics dictionary and Thesaurus are back. The upgrade pricing is layed out on the brochure, and varies depending on what modules you desire, how recently you bought XyWrite III+ or Signature, and when you order 4.0. As far as we know here, there are currently no plans to add the Linqua functions to XyWrite 4.0. This may be on the drawing board for the future, but -More- Orbis and Ibid are the two major modules being addressed in the first release of XyWrite 4.0. Steve C. Technical Services