| 摘要 |
A method for collaborative teaching and learning, while facilitating simultaneous and dynamic changes by multiple users, includes: receiving a command to add or modify an existing topic record in a series of topic records in response to a user request; creating a new record in the event the received command is to add a new topic record; generating a modify token in the event the received command is to modify an existing topic record; deleting the modify token in response to completion of modifying the existing topic record; wherein the modify token prevents additional users from editing the existing topic record, but allows for the existing record to copied and modified while the first user is modifying the existing topic record; and wherein a collaboration engine generates and manages the modify token.
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