RRGbank

To change a label, click on a node to select a different label from a list. The syntactic category and the function tag (before and after the dash "-") must be selected separately by clicking on the corresponding part of the label.
To add a function tag to a node that does not have one yet, drag it from the list of function tags onto the node.
Re-attach a node by dragging and dropping it on a new parent. This can be used to created discontinuous constituents.
Similarly, nodes can be removed and new ones added by dragging to/from below the tree.
Finally, the bracketing can be edited manually in the text box below the tree; press "validate" to update the tree. Whitespace is ignored. Each token must have a dedicated POS tag.

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(SENTENCE
  (CLAUSE
    (CORE
      (NP
        (OP-DEF 0=The)
        (CORE_N
          (NUC_N
            (N 1=school-board)
            (N 2=hearing)
            (CLAUSE-PERI
              (PrCS
                (PP-WH (CORE_P (NUC_P (P 3=at)) (NP-WH (PRO-WH 4=which)))))
              (CORE (NP (PRO 5=she)) (NUC (AUX-TNS 6=was) (V 7=dismissed)))))))
      (NUC (AUX-TNS 8=was) (V 9=crowded))
      (PP
        (CORE_P
          (NUC_P (P 10=with))
          (NP
            (CORE_N
              (NUC_N
                (N 11=students)
                (, 12=,)
                (N 13=teachers)
                (CLM 14=and)
                (N 15=parents)
                (CLAUSE-PERI
                  (PrCS (NP-REL (PRO-REL 16=who)))
                  (CORE
                    (CORE (NUC (V 17=came)))
                    (CORE
                      (CLM 18=to)
                      (NUC (V 19=testify))
                      (PP-PERI
                        (CORE_P
                          (NUC_P (P 20=on))
                          (NP (OP-DEF 21=her) (CORE_N (NUC_N (N 22=behalf))))))))))))))
      (. 23=.))))

Supertags

	token	arc	supertag
1	The	3	(NP* (OP-DEF <>))
2	school-board	3	(NUC_N* (N <>))
3	hearing	10	(NP (CORE_N (NUC_N (N <>))))
4	at	8	(PP-WH (CORE_P (NUC_P (P <>)) (NP-WH )))
5	which	4	(NP-WH (PRO-WH <>))
6	she	8	(NP (PRO <>))
7	was	8	(NUC* (AUX-TNS <>))
8	dismissed	3	(NUC_N* (CLAUSE-PERI (PrCS (PP-WH )) (CORE (NP ) (NUC (V <>)))))
9	was	10	(NUC* (AUX-TNS <>))
10	crowded	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (PP ))))
11	with	10	(PP (CORE_P (NUC_P (P <>)) (NP )))
12	students	16	(NUC_N* (N <>))
13	,	16	(NUC_N* (, <>))
14	teachers	16	(NUC_N* (N <>))
15	and	16	(NUC_N* (CLM <>))
16	parents	11	(NP (CORE_N (NUC_N (N <>))))
17	who	18	(NP-REL (PRO-REL <>))
18	came	16	(NUC_N* (CLAUSE-PERI (PrCS (NP-REL )) (CORE (CORE (NUC (V <>))))))
19	to	20	(CORE* (CLM <>))
20	testify	18	(CORE* (CORE (NUC (V <>))))
21	on	20	(CORE* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
22	her	23	(NP* (OP-DEF <>))
23	behalf	21	(NP (CORE_N (NUC_N (N <>))))
24	.	10	(CORE* (. <>))