         // Display the pattern.
         for (int lvl = 0; lvl < currentLevel; lvl++) {
 
-            // Blink the LED.
+            // Blink the current pattern LED.
             digitalWrite(pattern[lvl], HIGH);
             delay(GAME_SPEED);
             digitalWrite(pattern[lvl], LOW);

boolean signalGameStart() {

    // Check the tilt switch and buttons for a new game.
    if (digitalRead(TILT) || analogRead(BUTTONS) > 3) {
        gameStart = true;
    }

    // Flash all LEDs to signal game start if appropriate.
    if (gameStart) {

        // Blink lights twice.
        for (int j = 0; j < 2; j++) {
            for (int k = 0; k < QTY; k++) {
                digitalWrite(LEDS[k], HIGH);

 */

// TODO Reset game in the middle of a game.

// Turn debug mode on or off.
const boolean DEBUG = true;
