Pokémon FireRed and LeafGreen/Controls

Overworld

 * - move in the appropriate direction (no diagonals)
 * / - help
 * pick up items, talk to people, etc.
 * - pull out the menu
 * - use a "registered" item

Battle

 * - Move around the battle menu
 * / - help
 * - Select an option from the menu(Attack, use item, switch Pokémon, run)
 * - Go back