wen u top a plant insted of growin wit 1 main cola u git 2 main colas. and if u top thes 2 colas u will git 4 colas and so on. but b careful if u top to much it can stress the plant into goin hermaphrodite. also wen u top it slows the growth of the plant a bit so u wood need to veg a lil longer
I'm only on my 3rd grow right now and I just topped for my first time, but I did get 4 main branches on each plant. I'll post pictures when they've had a chance to veg more