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}       
 ¦   ¦--'(': ( [0/0] {4}                               
 ¦   ¦--expr: call( [0/0] {5}                          
 ¦   ¦   ¦--expr: call [0/0] {7}                       
 ¦   ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {6}   
 ¦   ¦   ¦--'(': ( [0/6] {8}                           
 ¦   ¦   ¦--COMMENT: # com [0/0] {9}                   
 ¦   ¦   ¦--expr: 3 [1/3] {11}                         
 ¦   ¦   ¦   °--NUM_CONST: 3 [0/0] {10}                
 ¦   ¦   ¦--',': , [0/1] {12}                          
 ¦   ¦   ¦--expr: 4 [0/2] {14}                         
 ¦   ¦   ¦   °--NUM_CONST: 4 [0/0] {13}                
 ¦   ¦   °--')': ) [1/0] {15}                          
 ¦   °--')': ) [0/0] {16}                              
 °--expr: call( [2/0] {17}                             
     ¦--expr: call [0/0] {19}                          
     ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {18}      
     ¦--'(': ( [0/3] {20}                              
     ¦--expr: call( [0/0] {21}                         
     ¦   ¦--expr: call [0/0] {23}                      
     ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {22}  
     ¦   ¦--'(': ( [0/0] {24}                          
     ¦   ¦--expr: 1 [0/0] {26}                         
     ¦   ¦   °--NUM_CONST: 1 [0/0] {25}                
     ¦   ¦--',': , [0/1] {27}                          
     ¦   ¦--COMMENT: # com [0/4] {28}                  
     ¦   ¦--expr: 3 [1/0] {30}                         
     ¦   ¦   °--NUM_CONST: 3 [0/0] {29}                
     ¦   °--')': ) [1/0] {31}                          
     °--')': ) [0/0] {32}                              
