anchor.diff:          {value, Page} -> Page;
           false -> undefined
       end.
  +
  
positive.code: %% @doc Check session and page expiration, periodically called by the session manager
  check_expire(Now, Pid) ->
      gen_server:cast(Pid, {check_expire, Now}).
  
  
  %% @doc Dump the session details
  
negative.code:     keepalive/1, 
      keepalive/2, 
      ensure_page_session/1,
      get_attach_state/1,
      add_script/2,
      add_script/1,
      check_expire/2,
  