KEYCODE will inject an arbitrary keystroke from a three byte scan code. This may be useful when used in conjunction with HOLD, for language agnostics payloads, or when testing multimedia and other extended key functions not explicitly defined in the language file.ALTCODE allows the printing of alt-codes on Windows systems only.HOLD will hold the specified key until QUACK RELEASE is issued. HOLD accepts either a KEYCODE or a STRING.LOCK will prevent the attached keyboard from passing through keystrokes to the target. This may be useful in payloads which need to temporarily lock out the user while a sensitive keystroke injection attack is occuring. Keys pressed on the attached keyboard are not buffered while using LOCK and will not be typed once unlocked.UNLOCK will allow the attached keyboard to pass through keystrokes to the target once more after the QUACK LOCK command is issued. QUACK STRING command accepts strings interpreted by bash. Consider these key elements when using QUACK STRING.QUACK STRING is interpreted by bash, command substitution may be used. In this example, the Key Croc will inject the keystrokes containing the output of the ifconfig command.$() command substitution directive, which actually injects the keystrokes of the command in question.