This patch will change the cape smash. I thought it was too powerful in the original game- So now, a cape smash causes carriable items (or enemies, I.E. Goomba and Koopa) to fly into the air, but other sprites to stay on the ground (can be changed with a define). Additionally, when mario smashes the ground, he is bounced back, flying, into the air.
So it's more of a cape "bounce," now, I suppose (can also be changed).
Moderator's note: pretty fun patch that now works with SA-1 as well.
Definitively an interesting change to the cape mechanic. There is some jank with sprites which don't touch the ground all the time (such as Yoshi) but these tend to be on the minor side, not to mention you can make some interesting puzzles with it.