31. Apparatus as claimed in claim 1 , comprising a cache memory operable to store a copy of web page code output in a response message; and means for outputting web page code from the stored copy in response to receiving a further request message for the same web page information.
31. Apparatus as claimed in claim 1 , comprising a cache memory operable to store a copy of web page code output in a response message; and means for outputting web page code from the stored copy in response to receiving a further request message for the same web page information. 32. Apparatus as claimed in claim 31 , wherein the cache memory is operable to selectively store web page code depending upon whether a requirement for cache memory storage is defined in the content document from which the web page code is generated.