WTVML
WTVML is an XML-based and WML-derived content format designed to allow web site operators to easily develop and deploy Interactive TV services, typically it reduces the time taken for web site operators to create a TV Site, and results in the Site being deployable on a larger number of devices, and is capable of being automatically validated, tested and transformed. WTVML was originally developed by Ian Valentine and Patrick Sansom in a company called WapTV. After demonstrating the ability to develop Interactive TV services using web infrastructures and XML, and successfully deploying them to existing TV set-top-boxes over dial up modems, the company was acquired by BSkyB. The technology was first used to launch Sky's interactive betting service on December 6, 2000, and later became the basis of a large number of "red button" channel portals and internet based interactive services.