[Twisted-Python] Keeping the same design sitewide?

Hi, I was wondering how I can use Woven and keep the overall "sceleton" of my design in one file and wrap that around my templates at run-time? I mean, I want to create one page which links to my stylesheet, displays a logo, some header-text and a footer that will be the same site wide, and then just glue what the different pages generate into the sceleton-file. Any clues on how to keep the design in one file and still use Woven? Thomas