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The json encoding of a repeat 4 forward 100 right 90 project:
 
The json encoding of a repeat 4 forward 100 right 90 project:
 
                                        
 
                                        
  [[0,"repeat",331,158,[null,1,2,null]],[1,["number","4"],417,167,[0,null]],[2,"forward",426,207,[0,3,4]],[3,["number","100"],500,216,[2,null]],[4,"right",426,246,[2,5,null]],[5,["number","90"],500,255,[4,null]],[-1,"turtle",0,0,0,0,50,5]]
+
  [[0,"repeat",331,158,[null,1,2,null]],
 +
[1,["number","4"],417,167,[0,null]],
 +
[2,"forward",426,207,[0,3,4]],
 +
[3,["number","100"],500,216,[2,null]],
 +
[4,"right",426,246,[2,5,null]],
 +
[5,["number","90"],500,255,[4,null]],
 +
[-1,"turtle",0,0,0,0,50,5]]
    
The basic structure of the encoding is a list of lists, where each block has these elements:
 
The basic structure of the encoding is a list of lists, where each block has these elements:
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# pen shade
 
# pen shade
 
# pen width
 
# pen width
      
== Modifying Turtle Art ==
 
== Modifying Turtle Art ==