The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.
"The Court ordered Mr. Burke to travel across the country to appear before a California grand jury without ever allowing him to see the full documents that justified the extraordinary compulsion," Dawud Burke's attorney said in the filing.
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abort(reason) { closed = true; chunks.length = 0; },