What is the job of a brake caliper?

• To control brake lines
  The job of the caliper is to slow the car's wheels by creating friction with the rotors. How Brake Calipers Work
• To create friction with the rotors
  The job of the caliper is to slow the car's wheels by creating friction with the rotors. How Brake Calipers Work
• To control brake fluid
  The job of the caliper is to slow the car's wheels by creating friction with the rotors. How Brake Calipers Work