adding comment blocks
adding comment blocks


Former-commit-id: 1988b96ed1437eaf6394ba7a8fe73715613f3f2a [formerly 6c2d069a7eb69a89177381c67c629e9df97980b5]
Former-commit-id: 17720781298bf32e83eff94243fcac17375d276b
andrewplummer/Sugar,romancow/Sugar,andrewplummer/Sugar,romancow/Sugar