Text this: A Graph-aided method for planning two-level fractional experiments when certain interactions are important using Taguchi's linear graphs

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