7. The method of claim 1 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.
7. The method of claim 1 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. 8. The method of claim 7 wherein selecting a classified structural element further comprises selecting a classified structural element having an associated classification identifier that corresponds to the user classification.