(or the equivalent mapped button on your controller) to toggle everything to "Unlocked".
Known unlockable characters/content (common targets) wwe 13 wii unlock everything
Most arenas are unlocked by playing through the Attitude Era mode. Each chapter you complete unlocks the corresponding PPV arena from that era (e.g., completing the Mankind chapter unlocks the 1999 PPV arenas). (or the equivalent mapped button on your controller)