You can now use the environments to your advantage by not just knocking someone 
through a window or down a staircase, but also by employing context-sensitive 
actions. For example, you can leap over a barrier towards an opponent and lay 
down a special attack, use special acrobatic moves off of walls, and 
context-sensitive throws near hillsides and stairways. You need to practice 
extensively with your favorite characters to make good and strategic use of 
these moves, but they warrant the extra effort.