ROOT (token: short_text [lag_newlines/spaces] {pos_id})
 ¦--expr: call( [0/0] {1}                              
 ¦   ¦--expr: call [0/0] {3}                           
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {2}       
 ¦   ¦--'(': ( [0/2] {4}                               
 ¦   ¦--expr: 1 [3/0] {6}                              
 ¦   ¦   °--NUM_CONST: 1 [0/0] {5}                     
 ¦   °--')': ) [1/0] {7}                               
 ¦--expr: call( [2/0] {8}                              
 ¦   ¦--expr: call [0/0] {10}                          
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {9}       
 ¦   ¦--'(': ( [0/2] {11}                              
 ¦   ¦--COMMENT: # com [1/2] {12}                      
 ¦   ¦--expr: 1 [2/0] {14}                             
 ¦   ¦   °--NUM_CONST: 1 [0/0] {13}                    
 ¦   °--')': ) [1/0] {15}                              
 ¦--expr: call( [2/0] {16}                             
 ¦   ¦--expr: call [0/0] {18}                          
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {17}      
 ¦   ¦--'(': ( [0/2] {19}                              
 ¦   ¦--SYMBOL_SUB: x [1/1] {20}                       
 ¦   ¦--EQ_SUB: = [0/1] {21}                           
 ¦   ¦--expr: 2 [0/0] {23}                             
 ¦   ¦   °--NUM_CONST: 2 [0/0] {22}                    
 ¦   ¦--',': , [0/2] {24}                              
 ¦   ¦--expr: 1 [1/0] {26}                             
 ¦   ¦   °--NUM_CONST: 1 [0/0] {25}                    
 ¦   ¦--',': , [0/2] {27}                              
 ¦   ¦--expr: "w" [2/0] {29}                           
 ¦   ¦   °--STR_CONST: "w" [0/0] {28}                  
 ¦   °--')': ) [1/0] {30}                              
 °--expr: call( [2/0] {31}                             
     ¦--expr: call [0/0] {33}                          
     ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {32}      
     ¦--'(': ( [0/2] {34}                              
     ¦--expr: 1 [1/0] {36}                             
     ¦   °--NUM_CONST: 1 [0/0] {35}                    
     ¦--',': , [0/2] {37}                              
     ¦--expr: 2 [1/0] {39}                             
     ¦   °--NUM_CONST: 2 [0/0] {38}                    
     ¦--',': , [0/2] {40}                              
     ¦--COMMENT: # com [4/2] {41}                      
     ¦--expr: 1 [2/0] {43}                             
     ¦   °--NUM_CONST: 1 [0/0] {42}                    
     ¦--',': , [0/2] {44}                              
     ¦--expr: 2 [1/0] {46}                             
     ¦   °--NUM_CONST: 2 [0/0] {45}                    
     ¦--',': , [0/2] {47}                              
     ¦--expr: 3 [2/0] {49}                             
     ¦   °--NUM_CONST: 3 [0/0] {48}                    
     °--')': ) [1/0] {50}                              
