  This paper presents an e-commerce framework called WebShop, which was
developed by the authors for the purpose of demonstrating the use of UML and
the UML-F in the domain of Web applications. Thus, the WebShop is not regarded
as a full-fledged system out of which real Web stores can be derived. For
example, the framework in the presented version does not encounter security
features. However, it presents the most important variation points related to
online catalogs. The UML-F Web site http://www.UML-F.net provides the Java
source files and some sample adaptations of WebShop.
