Arena's primary purpose is to be a testbed for new features of the web. In the past, we have implemented HTML3 features including tables and math. Currently, style sheets are in focus along with new graphics formats such as PNG. Also, Arena is a testing tool for the W3C Reference Library. The library provides a common platform which will ensure future compatibility on the web. If you are a browser vendor, it will save you time. WWW: http://www.yggdrasil.com/Products/Arena/