Nowadays, more and more people are accessing the Internet wirelessly via many different mobile devices such as notebooks, PDAs and Smartphones. The heterogeneity of the various portable devices makes the experience of using the Internet much different from using a desktop computer. Web pages must be adapted to the context of computing for efficient delivery and user satisfaction. The FA?ADE framework was developed as a context-aware adaptation tool for single-source web pages. However, due to the initial steep learning curve to successfully create single-source web pages, a web page authoring tool is needed to automatically generate the XHTML code. This short paper describes the initial efforts to develop such a tool. It provides the author with a WYSIWYG graphical user interface and the ability to author context-adaptable web pages for multiple end user devices simultaneously.