| 摘要 |
A hierarchical structured data document system having a duplicated tree structure includes a map store ( 350, 352 ). A map index ( 354 ) has a map pointer pointing to a location in the map store in one of the map index's locations. A duplicate array ( 364 ) contains a second map pointer. The map index ( 354 ) has an array pointer that points to the duplicate array. The duplicate array stores map pointers pointing to duplicates of tags or data stored in the map store.
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