Describir: The exchange module and TGV station

  ______   _    _    _    _      ___     _____      ______    ______  
 /_____// | || | || | || | ||   / _ \\  |  __ \\   /_   _//  /_   _// 
 `____ `  | || | || | || | ||  | / \ || | |  \ ||   -| ||-   `-| |,-  
 /___//   | \\_/ || | \\_/ ||  | \_/ || | |__/ ||   _| ||_     | ||   
 `__ `     \____//   \____//    \___//  |_____//   /_____//    |_||   
 /_//       `---`     `---`     `---`    -----`    `-----`     `-`'   
 `-`                                                                  
 __   __  
 \ \\/ // 
  \ ` //  
   | ||   
   |_||   
   `-`'