A long time ago in 2008, when I first started planning this HTML guide, I made a graphic of the SNES game controller, with the controls for SUPER METROID labeled. It was made before I started using Inkscape; thus, I have improved it, but removed the labels (can't have the picture tell everything, and I don't want to be repetitive).
The default controls are:
|Control Pad (AKA D-pad):|
|[▲] Up||Aim straight up. If you're crouched, hold both L and R to aim straight up.|
|[▼] Down||Press once to crouch; if you have the Morphing Ball, press again to roll into a ball (morph). In mid-air, this aims straight down.|
|[◄] Left||Run left.|
|[►] Right||Run right.|
|These can also be combined when aiming to aim in all
four diagonal directions.
|(A)||Jump. If you jump while running, you'll do a Spin-Jump (or Space-Jump/Screw Attack, when equipped).|
|(B)||Dash. If equipped, this also activates the Speed Booster (or the X-Ray Scope if it is selected).|
|(X)||Fire. Holding this button will make Samus fire rapidly (or activate the Charge Beam, if it's equipped).|
|(Y)||Cancel secondary weapon selection.|
|[L]||Angle down (aim diagonally down).|
|[R]||Angle up (aim diagonally up).|
|(Start)||Pause and show Map and Samus Screens.|
|(Select)||Cycle through available secondary weapons.|
All of these (except the Control Pad and Start buttons) can be reassigned on the "CONTROLLER SETTING MODE" screen when you start your game.
"Nintendo", "Super Nintendo" / "SNES", "Nintendo 64" / "N64", "Donkey Kong", "Legend of Zelda", "Super Mario World", "Super Mario 64", "Metroid", and all related content, names, etc., are trademarked and/or copyright ™ / © Nintendo.