| 摘要 |
<p>A technique for efficient on-line interaction between a group host and group guests, such that the group host has control over information presented to the entire group and has control over the composition of the group. The group host initiates an interactive presentation session that the other network users may join and, during the session, the host may determine the information to be presented in the information display area and may manage the users who are permitted to participate in the session. The users may exchange messages in the interaction area in response to information in the presentation area. The information in the presentation area can concern products available for purchase, or classroom material to be learned, or the like. The interaction area may be the site where products are discussed and purchases are arranged, or where student questions or examinations are answered.</p> |
