User guide

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  
                                                                                          
                                                            
                                                                     
                                                                      
                                                                                       
                                                                         
                                                        
                                                                               
                                                                            
                                                                                       
                                                                                   
                                                          
                                                                                
                                                                              
                                                                                  
                                                                  
                                                                       
                                                                             
                                                                
                                                                           
                                                                                   
                                                                                   
                                                                        
                                                                                  
                                                                                          
                                                                                  
                                                                                 
                                                              
                                                                        
                                                    
                                                                                      
                                                                               
                                                                                  
                                                                   
                                                                                   
                                                                                 
                                                                                   
                                                                                     
                                                                      
                                                                  
                                                                     
                                                                                       
                                                                
                                                                                
                                                     
                                                                                
                                                                      
                                                                     
                                                                               
                                                                   
                                                                           
                                                                              
                                                              
                                                      
                                                                     