6. The method of claim 1 further comprising creating a session document from a presentation document, including: identifying a presentation document for the presentation, the presentation document including a presentation grammar and a structured document having structural elements classified with classification identifiers; identifying a user participant for the presentation, the user having a user profile comprising user classifications; and filtering the structured document in dependence upon the user classifications and the classification identifiers.
1. A method for differential dynamic content delivery, the method comprising: providing a session document for a presentation, wherein the session document includes a session grammar and a session structured document; selecting from the session structured document a classified structural element bearing a preview designation; providing a preview of the selected structural element to a prospective user participant; receiving from the prospective user participant an indication of interest in the selected structural element; and recording the presentation for the prospective user participant based on said indication of interest and on the prospective user participant not attending a presentation session.