player p
block p magenta boring
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▓ ▓ ▓
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block g green interesting
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    ▓ ε▓▓
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    p    
 ▓ --- ▓ 
   g=G   
         
    ▓    
         
link G g green
link F g green
epsilon ε g green
  ▓   F  
  ▓      
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      ▓  
      ▓  
      ▓  
      ▓  
     ▓▓  
   ▓