When you run a webdynpro application it runs on a browser. For anything to be displayed on a browser it has to be in html format. But how is that webdynpro has all these stylish buttons is it using a style sheet if yes where is this stored. Is the webdynpro runtime a servlet which runs on SAP WebAS servlet engine. and knows what/where to look for when one runs a webdynpro application.???