Jab Stepping is a tech that can be performed in both games. Jab Stepping allows you to move forward immediately after performing a jab (normal attack).
It is performed by immediately pressing left or right after inputting a jab. Your character will move forward in that direction and once the attack animation finishes, your character will continue to move in that direction.
Jab Stepping can also be used to change the direction of a jab. If the jab is performed and you input the opposite direction to the jab, it will finish on the other side. Using this, it is possible to fake out your opponents with jab stepping. If your character is close to the opponent, then jab stepping can be used to hit them twice with the one move!