ROOT (token: short_text [lag_newlines/spaces] {pos_id})               
 °--expr:  [0/0] {1}                                                  
     ¦--expr:  [0/0] {3}                                              
     ¦   °--SYMBOL: b [0/0] {2}                                       
     ¦--LEFT_ASSIGN: <- [0/0] {4}                                     
     °--expr:  [0/0] {5}                                              
         ¦--FUNCTION: funct [0/0] {6}                                 
         ¦--'(': ( [0/0] {7}                                          
         ¦--SYMBOL_FORMALS: x [0/3] {8}                               
         ¦--')': ) [0/0] {9}                                          
         °--expr:  [0/0] {10}                                         
             ¦--'{': { [0/2] {11}                                     
             ¦--expr:  [1/2] {12}                                     
             ¦   ¦--expr:  [0/1] {14}                                 
             ¦   ¦   °--SYMBOL: x [0/0] {13}                          
             ¦   ¦--LEFT_ASSIGN: <- [0/1] {15}                        
             ¦   °--expr:  [0/0] {16}                                 
             ¦       ¦--expr:  [0/0] {18}                             
             ¦       ¦   °--SYMBOL_FUNCTION_CALL: c [0/0] {17}        
             ¦       ¦--'(': ( [0/0] {19}                             
             ¦       ¦--expr:  [0/0] {21}                             
             ¦       ¦   °--NUM_CONST: 1 [0/0] {20}                   
             ¦       ¦--',': , [0/19] {22}                            
             ¦       ¦--expr:  [1/0] {23}                             
             ¦       ¦   ¦--expr:  [0/0] {25}                         
             ¦       ¦   ¦   °--NUM_CONST: 2 [0/0] {24}               
             ¦       ¦   ¦--'+': + [0/5] {26}                         
             ¦       ¦   °--expr:  [0/0] {28}                         
             ¦       ¦       °--NUM_CONST: 3 [0/0] {27}               
             ¦       ¦--',': , [0/9] {29}                             
             ¦       ¦--expr:  [1/1] {30}                             
             ¦       ¦   ¦--expr:  [0/0] {32}                         
             ¦       ¦   ¦   °--SYMBOL_FUNCTION_CALL: sin [0/0] {31}  
             ¦       ¦   ¦--'(': ( [0/0] {33}                         
             ¦       ¦   ¦--expr:  [0/0] {35}                         
             ¦       ¦   ¦   °--SYMBOL: pi [0/0] {34}                 
             ¦       ¦   °--')': ) [0/0] {36}                         
             ¦       °--')': ) [0/0] {37}                             
             ¦--expr:  [2/20] {38}                                    
             ¦   ¦--IF: if [0/0] {39}                                 
             ¦   ¦--'(': ( [0/0] {40}                                 
             ¦   ¦--expr:  [0/0] {41}                                 
             ¦   ¦   ¦--expr:  [0/1] {43}                             
             ¦   ¦   ¦   °--SYMBOL: x [0/0] {42}                      
             ¦   ¦   ¦--GT: > [0/1] {44}                              
             ¦   ¦   °--expr:  [0/0] {46}                             
             ¦   ¦       °--NUM_CONST: 10 [0/0] {45}                  
             ¦   ¦--')': ) [0/0] {47}                                 
             ¦   °--expr:  [0/0] {48}                                 
             ¦       ¦--'{': { [0/0] {49}                             
             ¦       ¦--expr:  [1/2] {50}                             
             ¦       ¦   ¦--expr:  [0/0] {52}                         
             ¦       ¦   ¦   °--SYMBOL_FUNCTION_CALL: retur [0/0] {51}
             ¦       ¦   ¦--'(': ( [0/0] {53}                         
             ¦       ¦   ¦--expr:  [0/0] {55}                         
             ¦       ¦   ¦   °--STR_CONST: "done [0/0] {54}           
             ¦       ¦   °--')': ) [0/0] {56}                         
             ¦       °--'}': } [1/0] {57}                             
             °--'}': } [1/0] {58}                                     
