a while back I was watching atv show on bbc america maybe some of you saw called should i smoke dope. anyway she was in a coffee shop i think and they had some plants growing in the background. there was a guy triming jost the ends of some fan leaves off. kinda like clipping a parots wings so it could not fly. what is the purpose of this? not the hole leaf just the tip of it with a pair of sissors. just curious