anchor.diff:  1. The whole class is asked to write down all guessed letters on a sheet of 
      paper.
   
  -2. A player can guess again when the secret word contained the guessed letter.
  +2. A player can guess again when when the last guess was right, meaning the
  +   secret contained the guessed letter.
   
   3. If not, the next player may try it. In bigger groups the next player should
  -be chosen randomly.
  +   be chosen randomly. This incites the whole group as nobody knows who will 
  +   be the next.
   
   4. A player is not allowed to ask others to remind him if a letter was already
  -   tried or not. He has to solely rely on his notes.
  +   tried or not. He has to solely rely on his own notes.
   
   5. The winner of the game it the person who discloses the last letter of the
      secret word.
  
positive.code: +
  image::02-Screenshot-Windows.png[]
  
  == Configuration
  
  === Synopsis and syntax
  
  include::../../src/main.rs[lines="51..91"]
  
  
  
  === Sample configuration file
  
  ==== Simple configuration file
  
  ----
  guess me
  
negative.code: 
  === Classroom requirements
  
  *  Big screen or projector
  
  *  Windows or Linux Computer with `hangman.exe` or `hangman` binary installed.
  
  