ROOT (token: short_text [lag_newlines/spaces] {pos_id})               
 ¦--COMMENT: #' Hi [0/0] {1}                                          
 ¦--COMMENT: #' [1/0] {2}                                             
 ¦--COMMENT: #' x [1/0] {3}                                           
 ¦--COMMENT: #' @e [1/0] {4}                                          
 ¦--COMMENT: #' \d [1/0] {5}                                         
 ¦--COMMENT: #' st [1/0] {6}                                          
 ¦--COMMENT: #' st [1/0] {7}                                          
 ¦--COMMENT: #'    [1/0] {8}                                          
 ¦--COMMENT: #'    [1/0] {9}                                          
 ¦--COMMENT: #' ) [1/0] {10}                                          
 ¦--COMMENT: #' } [1/0] {11}                                          
 ¦--COMMENT: #' @e [1/0] {12}                                         
 °--expr: style [1/0] {13}                                            
     ¦--expr: style [0/1] {15}                                        
     ¦   °--SYMBOL: style [0/0] {14}                                  
     ¦--LEFT_ASSIGN: <- [0/1] {16}                                    
     °--expr: funct [0/0] {17}                                        
         ¦--FUNCTION: funct [0/0] {18}                                
         ¦--'(': ( [0/0] {19}                                         
         ¦--SYMBOL_FORMALS: pkg [0/1] {20}                            
         ¦--EQ_FORMALS: = [0/1] {21}                                  
         ¦--expr: "." [0/0] {23}                                      
         ¦   °--STR_CONST: "." [0/0] {22}                             
         ¦--',': , [0/22] {24}                                        
         ¦--SYMBOL_FORMALS: ... [1/0] {25}                            
         ¦--',': , [0/22] {26}                                        
         ¦--SYMBOL_FORMALS: style [1/1] {27}                          
         ¦--EQ_FORMALS: = [0/1] {28}                                  
         ¦--expr: tidyv [0/0] {30}                                    
         ¦   °--SYMBOL: tidyv [0/0] {29}                              
         ¦--',': , [0/22] {31}                                        
         ¦--SYMBOL_FORMALS: trans [1/1] {32}                          
         ¦--EQ_FORMALS: = [0/1] {33}                                  
         ¦--expr: style [0/0] {34}                                    
         ¦   ¦--expr: style [0/0] {36}                                
         ¦   ¦   °--SYMBOL_FUNCTION_CALL: style [0/0] {35}            
         ¦   ¦--'(': ( [0/0] {37}                                     
         ¦   ¦--expr: ... [0/0] {39}                                  
         ¦   ¦   °--SYMBOL: ... [0/0] {38}                            
         ¦   °--')': ) [0/0] {40}                                     
         ¦--',': , [0/22] {41}                                        
         ¦--SYMBOL_FORMALS: filet [1/1] {42}                          
         ¦--EQ_FORMALS: = [0/1] {43}                                  
         ¦--expr: "R" [0/0] {45}                                      
         ¦   °--STR_CONST: "R" [0/0] {44}                             
         ¦--',': , [0/22] {46}                                        
         ¦--SYMBOL_FORMALS: exclu [1/1] {47}                          
         ¦--EQ_FORMALS: = [0/1] {48}                                  
         ¦--expr: "R/Rc [0/0] {50}                                    
         ¦   °--STR_CONST: "R/Rc [0/0] {49}                           
         ¦--',': , [0/22] {51}                                        
         ¦--SYMBOL_FORMALS: inclu [1/1] {52}                          
         ¦--EQ_FORMALS: = [0/1] {53}                                  
         ¦--expr: TRUE [0/0] {55}                                     
         ¦   °--NUM_CONST: TRUE [0/0] {54}                            
         ¦--')': ) [0/1] {56}                                         
         °--expr: {
  p [0/0] {57}                                   
             ¦--'{': { [0/2] {58}                                     
             ¦--expr: pkg_r [1/2] {59}                                
             ¦   ¦--expr: pkg_r [0/1] {61}                            
             ¦   ¦   °--SYMBOL: pkg_r [0/0] {60}                      
             ¦   ¦--LEFT_ASSIGN: <- [0/1] {62}                        
             ¦   °--expr: rproj [0/0] {63}                            
             ¦       ¦--expr: rproj [0/0] {64}                        
             ¦       ¦   ¦--SYMBOL_PACKAGE: rproj [0/0] {65}          
             ¦       ¦   ¦--NS_GET: :: [0/0] {66}                     
             ¦       ¦   °--SYMBOL_FUNCTION_CALL: find_ [0/0] {67}    
             ¦       ¦--'(': ( [0/0] {68}                             
             ¦       ¦--SYMBOL_SUB: path [0/1] {69}                   
             ¦       ¦--EQ_SUB: = [0/1] {70}                          
             ¦       ¦--expr: pkg [0/0] {72}                          
             ¦       ¦   °--SYMBOL: pkg [0/0] {71}                    
             ¦       °--')': ) [0/0] {73}                             
             ¦--expr: chang [1/2] {74}                                
             ¦   ¦--expr: chang [0/1] {76}                            
             ¦   ¦   °--SYMBOL: chang [0/0] {75}                      
             ¦   ¦--LEFT_ASSIGN: <- [0/1] {77}                        
             ¦   °--expr: withr [0/0] {78}                            
             ¦       ¦--expr: withr [0/0] {79}                        
             ¦       ¦   ¦--SYMBOL_PACKAGE: withr [0/0] {80}          
             ¦       ¦   ¦--NS_GET: :: [0/0] {81}                     
             ¦       ¦   °--SYMBOL_FUNCTION_CALL: with_ [0/0] {82}    
             ¦       ¦--'(': ( [0/0] {83}                             
             ¦       ¦--expr: pkg_r [0/0] {85}                        
             ¦       ¦   °--SYMBOL: pkg_r [0/0] {84}                  
             ¦       ¦--',': , [0/1] {86}                             
             ¦       ¦--expr: prett [0/0] {87}                        
             ¦       ¦   ¦--expr: prett [0/0] {89}                    
             ¦       ¦   ¦   °--SYMBOL_FUNCTION_CALL: prett [0/0] {88}
             ¦       ¦   ¦--'(': ( [0/4] {90}                         
             ¦       ¦   ¦--expr: trans [1/0] {92}                    
             ¦       ¦   ¦   °--SYMBOL: trans [0/0] {91}              
             ¦       ¦   ¦--',': , [0/1] {93}                         
             ¦       ¦   ¦--expr: filet [0/0] {95}                    
             ¦       ¦   ¦   °--SYMBOL: filet [0/0] {94}              
             ¦       ¦   ¦--',': , [0/1] {96}                         
             ¦       ¦   ¦--expr: exclu [0/0] {98}                    
             ¦       ¦   ¦   °--SYMBOL: exclu [0/0] {97}              
             ¦       ¦   ¦--',': , [0/1] {99}                         
             ¦       ¦   ¦--expr: inclu [0/2] {101}                   
             ¦       ¦   ¦   °--SYMBOL: inclu [0/0] {100}             
             ¦       ¦   °--')': ) [1/0] {102}                        
             ¦       °--')': ) [0/0] {103}                            
             ¦--expr: invis [1/0] {104}                               
             ¦   ¦--expr: invis [0/0] {106}                           
             ¦   ¦   °--SYMBOL_FUNCTION_CALL: invis [0/0] {105}       
             ¦   ¦--'(': ( [0/0] {107}                                
             ¦   ¦--expr: chang [0/0] {109}                           
             ¦   ¦   °--SYMBOL: chang [0/0] {108}                     
             ¦   °--')': ) [0/0] {110}                                
             °--'}': } [1/0] {111}                                    
