Lines 1 to 1000: Opens=138, Closes=136, Diff=2
Lines 1001 to 2000: Opens=124, Closes=126, Diff=-2
Lines 2001 to 3000: Opens=188, Closes=185, Diff=3
Lines 3001 to 4000: Opens=154, Closes=154, Diff=0
Lines 4001 to 5000: Opens=39, Closes=39, Diff=0
Lines 5001 to 6000: Opens=167, Closes=168, Diff=-1
Lines 6001 to 7000: Opens=329, Closes=329, Diff=0
Lines 7001 to 8000: Opens=195, Closes=194, Diff=1
Lines 8001 to 8069: Opens=7, Closes=9, Diff=-2
