| 摘要 |
Source script ( 250, 260, 270 ) on multiple user portals is collaboratively manipulated by exchanging metadata ( 210 ) among the plurality of user portals to represent chosen segments of the source script. The metadata ( 210 ) contains properties ( 230 - 241 ) for the chosen segments of the source script. A common copy ( 250, 260, 270 ) of source script possessed among the plurality of user portals is initially identified. The source script, therefore, does not need to be transmitted among user portals during the collaboration because only the metadata for the common source script needs to be exchanged.
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