anchor.diff:  
   == What to Do
   
  -Implement link:music/music.html[Music].
  +Implement https://docs.cs50.net/2018/x/psets/3/music/music.html[Music].
   
   == How to Submit
   
  -. Log into https://cs50.io/ [CS50 IDE] and open a terminal window, if not open already.
  +. Log into https://cs50.io/[CS50 IDE] and open a terminal window, if not open already.
   . Ensure your workspace is up-to-date by executing:
   +
   [source]
  
positive.code: == tl;dr
   
  [start=0]
  . Watch https://video.cs50.net/2018/x/lectures/3 [Week 2's lecture].
  . Make beautiful music. 
  . Submit your code.
  
  
negative.code: 
  Alright, here we go again!
  
  Log into https://cs50.io/[cs50.io] and execute the below in a terminal window.
  
  [source]
  ----
  