I read about this technique somewhere, but had never put it into action. This plant had the stem physically broken in

1/2 about 2 nodes (1/2way) down from the top. Broken 3/4+ of the way throug, the "dangling" portion was held up in place by the rim of the cup, so it was held at a right angle and healed. There is a huge (nearly 2x stem diameter) knot where the break was. Notice that the tip stopped growing and it did not revert to an upright growth position/phototropism until the plant healed sufficiently, approximately ~ 10-12 days after the breaking. meanwhile, everything under the break got a huge growth spurt.