Showing deallocations in an interval?

Is there any way, in Instruments, to figure out what allocations were deallocated in an interval? I'd like to highlight a section of the allocations timeline, and then see only the blocks that were deallocated during that interval (for bonus points, show only blocks that were allocated before that interval, but deallocated during that interval).


I don't see an obvious way to do this. Thanks!

Showing deallocations in an interval?
 
 
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