35. The at least one computer readable recordable medium of claim 29 , wherein providing to a multiplicity of users a presentation comprises: providing a session document for the presentation, wherein the session document includes a session grammar and a session structured document; selecting from the session structured document a classified structural element in dependence upon user classifications of a user participant in the presentation; and presenting the selected structural element to the user participant.
29. At least one computer readable recordable medium encoded with instructions that, when executed, perform a method comprising: providing to a multiplicity of users a presentation; streaming streamed speech to a first user including individual speech from at least one other user participating in the presentation; detecting whether the streamed speech contains simultaneous speech resulting from two or more users speaking simultaneously; and displaying, to the first user during the presentation, text of the streamed speech in response to detecting that the streamed speech contains simultaneous speech resulting from two or more users speaking simultaneously, wherein the two or more users speaking simultaneously comprise a second user and a third user, and wherein the displayed text comprises text corresponding to individual speech from the second user and text corresponding to individual speech from the third user.