How do you charge in super smash flash 2?

In Super Smash Flash 2, you can charge your special moves by holding down the respective attack button. For characters with chargeable moves, like Samus or Lucario, you simply press and hold the special attack button until the move is fully charged. Once charged, release the button to unleash the enhanced attack. Additionally, some characters can charge their smash attacks by holding the control stick in a direction while pressing the attack button.