[Commentor] LC-398 Zev Blut [Comment] 1.4 Default Delivery Context There is an entry for screen width, but not height. I think that there should be some value for a default screen height. [Commentor reply] no reply from commenter [Working Group decision] 
We decided not to include the screen height because: * research showed that even being able to view only a few lines (4) was sufficient for a reasonable user experience * we didn't want to fix the aspect ratio