Contribute correction: MSX GRAPH-SCAN

             ___     _____       ___    
  ____      / _ \\  |  __ \\    / _ \\  
 |    \\   | / \ || | |  \ ||  | / \ || 
 | [] ||   | \_/ || | |__/ ||  | \_/ || 
 |  __//    \___//  |_____//    \___//  
 |_|`-`     `---`    -----`     `---`   
 `-`