User guide

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      
 
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  
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   
        
            
     
       
       
  
     
         
         
        
   
     

      
     
 
 
       
        
        
        
 
        
          
         
    
  
        
       
        
       
       
  
   
         
       
  
   
        
 °        
       
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        
     
 
      
      
     
      
       
       
      
  

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
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      
      
        
        

 
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  
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     
     
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   
 