Text this: On the fold thickness of graphs

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