ISSUE-133 Plugin Problems How do our definition of Web Page and the Robustiness section interact?

(love the typo in the title)

http://www.w3.org/2006/WSC/track/issues/133

More specifically (than the text in the Issue), my proposal is to add the 
following to 4.1 directly after the definition of Web Page:

"Some of the recommendations in the [Robustness ref] section are easily 
undermined in the case of a document format interpreted by plug-ins or 
external systems served as part of the Web interaction, if the code that 
executes outside of the web user agent does not follow the same 
recommendations the web user agent does." 

Coming soon to a meeting near you. Despair and die.