Xyzz
Smash Champion
boost grabs are a "special" sort of grab, performed by starting a dash attack and then hitting Z within the first few frames (i want to say three, but am not completely sure). They look fairly similar to your dash attack, go a bit further though because you retain the momentum from the dash attack, which is quite significant on some characters (notably including Sheik).
Aerials autocancel when you land before or after after a set time, specific to each aerial (see here: http://www.angelfire.com/games5/superdoodleman/Sheik_frames_11.6.05.txt). Autocancels cause you to land with the basic 4 frames of landing lag, without even pressing a button. Notably Sheik's early fair can autocancels in a shorthop... that can potentially be useful :D
Aerials autocancel when you land before or after after a set time, specific to each aerial (see here: http://www.angelfire.com/games5/superdoodleman/Sheik_frames_11.6.05.txt). Autocancels cause you to land with the basic 4 frames of landing lag, without even pressing a button. Notably Sheik's early fair can autocancels in a shorthop... that can potentially be useful :D