8.7 3270-Emulation Applications You may encounter problems using certain 3270-emulation applications with Windows version 3.1. If you are using one of these applications, it is recommended that you purchase the Windows Resource Kit for the Microsoft Windows Operating System Version 3.1. This kit provides troubleshooting information about using 3270-emulation applications, in addition to complete technical information about Windows version 3.1 for the support professional. It includes a technical reference manual and a disk containing helpful utilities, system resource viewers, drivers, and accessories. To order the Windows Resource Kit within the United States, dial: 1-800-642-7676 To order outside of the United States, dial the phone number for your area. You can find this number on the International Subsidiary card. .