Professional User Interface Suite - Version 2.21 Prof-UIS is an easy-to-use MFC extension library that enables you to deliver Windows applications with a professional and user-friendly interface. It will help you take the time and complexity out of incorporating rich and up-to-date UI facilities in your projects: on-the-fly changeable Microsoft Office 2000/XP/2003 appearance, Visual Studio .NET-like resizable control bars, multi-profile UI persistence, and much more.