.power (date unknown) is a command implemented by Francis in YutoBot which prints the following text:

⚠️ WARNING-HEALTH AND SAFETY

BEFORE PLAYING, READ YOUR OPERATIONS
MANUAL FOR IMPORTANT INFORMATION
ABOUT YOUR HEALTH AND SAFETY.

Also online at
www.nintendo.com/healthsafety/

Press Ⓐ to continue

and is commonly followed up with the .Ⓐ command.