ROOT (token: short_text [lag_newlines/spaces] {pos_id})             
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 ¦--COMMENT: #' [1/0] {2}                                           
 ¦--COMMENT: #' @p [1/0] {3}                                        
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 ¦--COMMENT: #' @e [1/0] {5}                                        
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 ¦--COMMENT: #' #  [1/0] {9}                                        
 ¦--COMMENT: #' [1/0] {10}                                          
 ¦--COMMENT: #' [1/0] {11}                                          
 ¦--COMMENT: #' [1/0] {12}                                          
 ¦--COMMENT: #' [1/0] {13}                                          
 ¦--COMMENT: #' #  [1/0] {14}                                       
 ¦--COMMENT: #' a  [1/0] {15}                                       
 ¦--COMMENT: #' #  [1/0] {16}                                       
 ¦--COMMENT: #' \d [1/0] {17}                                      
 ¦--COMMENT: #' x [1/0] {18}                                        
 ¦--COMMENT: #' [1/0] {19}                                          
 ¦--COMMENT: #' y  [1/0] {20}                                       
 ¦--COMMENT: #' [1/0] {21}                                          
 ¦--COMMENT: #' #  [1/0] {22}                                       
 ¦--COMMENT: #' [1/0] {23}                                          
 ¦--COMMENT: #' a  [1/0] {24}                                       
 ¦--COMMENT: #' } [1/0] {25}                                        
 ¦--COMMENT: #' @i [1/0] {26}                                       
 ¦--COMMENT: #' @e [1/0] {27}                                       
 °--expr:  [1/0] {28}                                               
     ¦--expr:  [0/1] {30}                                           
     ¦   °--SYMBOL: creat [0/0] {29}                                
     ¦--LEFT_ASSIGN: <- [0/1] {31}                                  
     °--expr:  [0/0] {32}                                           
         ¦--FUNCTION: funct [0/0] {33}                              
         ¦--'(': ( [0/0] {34}                                       
         ¦--SYMBOL_FORMALS: initi [0/1] {35}                        
         ¦--EQ_FORMALS: = [0/1] {36}                                
         ¦--expr:  [0/0] {38}                                       
         ¦   °--SYMBOL: defau [0/0] {37}                            
         ¦--',': , [0/31] {39}                                      
         ¦--SYMBOL_FORMALS: line_ [1/1] {40}                        
         ¦--EQ_FORMALS: = [0/1] {41}                                
         ¦--expr:  [0/0] {43}                                       
         ¦   °--NULL_CONST: NULL [0/0] {42}                         
         ¦--',': , [0/31] {44}                                      
         ¦--SYMBOL_FORMALS: space [1/1] {45}                        
         ¦--EQ_FORMALS: = [0/1] {46}                                
         ¦--expr:  [0/0] {48}                                       
         ¦   °--NULL_CONST: NULL [0/0] {47}                         
         ¦--',': , [0/31] {49}                                      
         ¦--SYMBOL_FORMALS: token [1/1] {50}                        
         ¦--EQ_FORMALS: = [0/1] {51}                                
         ¦--expr:  [0/0] {53}                                       
         ¦   °--NULL_CONST: NULL [0/0] {52}                         
         ¦--',': , [0/31] {54}                                      
         ¦--SYMBOL_FORMALS: inden [1/1] {55}                        
         ¦--EQ_FORMALS: = [0/1] {56}                                
         ¦--expr:  [0/0] {58}                                       
         ¦   °--NULL_CONST: NULL [0/0] {57}                         
         ¦--',': , [0/31] {59}                                      
         ¦--SYMBOL_FORMALS: use_r [1/1] {60}                        
         ¦--EQ_FORMALS: = [0/1] {61}                                
         ¦--expr:  [0/0] {63}                                       
         ¦   °--NUM_CONST: FALSE [0/0] {62}                         
         ¦--',': , [0/31] {64}                                      
         ¦--SYMBOL_FORMALS: reind [1/1] {65}                        
         ¦--EQ_FORMALS: = [0/1] {66}                                
         ¦--expr:  [0/0] {67}                                       
         ¦   ¦--expr:  [0/0] {69}                                   
         ¦   ¦   °--SYMBOL_FUNCTION_CALL: tidyv [0/0] {68}          
         ¦   ¦--'(': ( [0/0] {70}                                   
         ¦   °--')': ) [0/0] {71}                                   
         ¦--')': ) [0/1] {72}                                       
         °--expr:  [0/0] {73}                                       
             ¦--'{': { [0/2] {74}                                   
             ¦--expr:  [1/0] {75}                                   
             ¦   ¦--expr:  [0/1] {76}                               
             ¦   ¦   ¦--expr:  [0/0] {78}                           
             ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: lst [0/0] {77}    
             ¦   ¦   ¦--'(': ( [0/4] {79}                           
             ¦   ¦   ¦--COMMENT: # tra [1/4] {80}                   
             ¦   ¦   ¦--SYMBOL_SUB: initi [1/1] {81}                
             ¦   ¦   ¦--EQ_SUB: = [0/1] {82}                        
             ¦   ¦   ¦--expr:  [0/0] {83}                           
             ¦   ¦   ¦   ¦--expr:  [0/0] {85}                       
             ¦   ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: lst [0/0] {84}
             ¦   ¦   ¦   ¦--'(': ( [0/0] {86}                       
             ¦   ¦   ¦   ¦--expr:  [0/0] {88}                       
             ¦   ¦   ¦   ¦   °--SYMBOL: initi [0/0] {87}            
             ¦   ¦   ¦   °--')': ) [0/0] {89}                       
             ¦   ¦   ¦--',': , [0/4] {90}                           
             ¦   ¦   ¦--expr:  [1/0] {92}                           
             ¦   ¦   ¦   °--SYMBOL: line_ [0/0] {91}                
             ¦   ¦   ¦--',': , [0/4] {93}                           
             ¦   ¦   ¦--expr:  [1/0] {95}                           
             ¦   ¦   ¦   °--SYMBOL: space [0/0] {94}                
             ¦   ¦   ¦--',': , [0/4] {96}                           
             ¦   ¦   ¦--expr:  [1/0] {98}                           
             ¦   ¦   ¦   °--SYMBOL: token [0/0] {97}                
             ¦   ¦   ¦--',': , [0/4] {99}                           
             ¦   ¦   ¦--expr:  [1/0] {101}                          
             ¦   ¦   ¦   °--SYMBOL: inden [0/0] {100}               
             ¦   ¦   ¦--',': , [0/4] {102}                          
             ¦   ¦   ¦--COMMENT: # tra [1/4] {103}                  
             ¦   ¦   ¦--expr:  [1/0] {105}                          
             ¦   ¦   ¦   °--SYMBOL: use_r [0/0] {104}               
             ¦   ¦   ¦--',': , [0/4] {106}                          
             ¦   ¦   ¦--expr:  [1/2] {108}                          
             ¦   ¦   ¦   °--SYMBOL: reind [0/0] {107}               
             ¦   ¦   °--')': ) [1/0] {109}                          
             ¦   ¦--SPECIAL-PIPE: %>% [0/4] {110}                   
             ¦   °--expr:  [1/0] {111}                              
             ¦       ¦--expr:  [0/0] {113}                          
             ¦       ¦   °--SYMBOL_FUNCTION_CALL: map [0/0] {112}   
             ¦       ¦--'(': ( [0/0] {114}                          
             ¦       ¦--expr:  [0/0] {116}                          
             ¦       ¦   °--SYMBOL: compa [0/0] {115}               
             ¦       °--')': ) [0/0] {117}                          
             °--'}': } [1/0] {118}                                  
