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Review of Code.org (stage 4 (controlling memoriy (assigning values),…

- - - - Things you misspelled or wrote in such a way the computer doesn't understand what you're trying to say
      - Usually the computer spits out an error message of some kind that is a clue about what it can't understand
      - Fix these with careful reading of the lines that have errors
    - - The program runs but doesn't do what you think it should
      - can be tricky to fix because there might not be an error message
      - Fix by retracing your steps, being humble, and trying to understand why the computer is interpretting what you wrote the way it is.
  - - - Remember:
        
        0,0 is the top left corner.
        
        Specify a location by how many pixels from the left and down from the top of the screen it is.
        
        The screen is 320 by 450 pixels.
        You can hover over the screen to see the x,y coordinate of any point.