[Initial version, taken from uwestminster-lectures tag 'TAG Snapshot for TWD example 4 Oct 2005'
Tony Garnock-Jones <tonyg@lshift.net>**20051004122932] 
[Fix URL calculation
Tony Garnock-Jones <tonyg@lshift.net>**20051004124259] 
[Shell documentation
Tony Garnock-Jones <tonyg@lshift.net>**20051004150449] 
[Attach copyright notices.
Tony Garnock-Jones <tonyg@lshift.net>**20051005102808] 
[Added comments to server-side code
francis.tang@lshift.net**20051005175235] 
[Only scroll if new messages are received
Tony Garnock-Jones <tonyg@lshift.net>**20051006100821] 
[comments for client-side code
francis.tang@lshift.net**20051006131406] 
[Add extra comments
Tony Garnock-Jones <tonyg@lshift.net>**20051006145449] 
[More documentation
Tony Garnock-Jones <tonyg@lshift.net>**20051006151658] 
[TAG Snapshot 200510061617-tonyg
Tony Garnock-Jones <tonyg@lshift.net>**20051006151729]