scroll="flow" would be the default, and for backwards compatibility. Wherever page designers want to put a section stop AND ONLY THEN they use scroll="stop" so

scroll="flow" would be the default, and for backwards compatibility. Wherever page designers want to put a section stop AND ONLY THEN they use scroll="stop" so users enjoy a better surfing experience, like I described earlier: going pic by pic, topic by topic or section by section. Don't like the spacebar? use any other mechanism. I am pointing a users need worth being considered.