An index that can be queries to see if an interval overlap any of those that are in it. Create an index of all intervals that then can be queried to see if a Cursor or Interval overlap a macro.
Check if i overlap any intervals for key.
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An index that can be queries to see if an interval overlap any of those that are in it. Create an index of all intervals that then can be queried to see if a Cursor or Interval overlap a macro.