Keyboard control help pls

[Skyvongolaprimo]

Hello, im new to ppsspp and i say first, i do read the beginner guide but i still dont get the controller mapping section. So help pls

Problem i encounter: Afterr i download ppsspp, i go play corpse party. As usual, most of the games have an intro trailer before u enter to the start menu. In game, i can simply click the keyboard to figure out myself which button is for ok/cancel/menu. But while watching the intro trailer, i cant find the "skip" button, means that i must watch the intro again and again everytime when i want to play the game

Im fine with the default keyboard, so can u list all the button on the keyboard? Example: Ok = Z, Cancel = x and so on...
Thanks