'<h2 class=abstract> O-O On the Go - Developing O-O applications for wireless </h2> <p class=abstract> In the Post-PC era, internet enabled digital wireless devices are first class internet access and information devices. The emergence of smart telecommunications gear capable of running applications and communicating with other devices makes them a natural partner for the internet, server side Java, modern scripting and markup languages.  This tutorial offers a survey discussion of: <p><ul> <li>Wireless applications architectures <li>Handheld Device Markup Language (HDML) <li>Wireless Markup Language (WML) <li>Wireless Application Protocol (WAP).  <li>Wireless SDKs from Nokia and Unwired Planet.  <li>Scripting for Wireless </ul> '