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
  (PrDP (NP (CORE_N (NUC_N (N 1=summer)) (AP-PERI (CORE_A (NUC_A (A 0=Last)))))))
  (CLAUSE
    (CORE
      (PP-PERI
        (CORE_P
          (NUC_P (P 10=about))
          (NP
            (CORE_N
              (NUC_N (N 13=coverage))
              (PP-PERI
                (CORE_P
                  (NUC_P (P 14=of))
                  (NP
                    (CORE_N
                      (NUC_N (N 17=uprising) (N 16=student))
                      (PP-PERI
                        (CORE_P
                          (NUC_P (P 18=in))
                          (NP (CORE_N (NUC_N (N-PROP 19=China)))))))
                    (OP-DEF 15=the))))
              (AP-PERI (CORE_A (NUC_A (A 12=poor)))))
            (OP-DEF 11=the))))
      (PP
        (CORE_P
          (NUC_P (P 7=to))
          (NP
            (CORE_N (NUC_N (N 9=executives)) (CLAUSE-PERI (CORE (NUC (V 8=network))))))))
      (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 5=bitterly))))
      (NP (CORE_N (NUC_N (N 4=affiliates))) (OP-DEF 3=the))
      (NUC (V 6=complained))))
  (. 20=.)
  (, 2=,))

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Supertags

	token	arc	supertag
1	Last	2	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
2	summer	0	(SENTENCE (PrDP (NP (CORE_N (NUC_N (N <>))))))
3	,	7	(CORE* (, <>))
4	the	5	(NP* (OP-DEF <>))
5	affiliates	7	(NP (CORE_N (NUC_N (N <>))))
6	bitterly	7	(CORE* (ADVP-PERI (CORE_ADV (NUC_ADV (ADV <>)))))
7	complained	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (PP (P ) (NP )) (PP (P ) (NP )))))
8	to	7	(P <>)
9	network	10	(NUC_N* (N <>))
10	executives	8	(NP (CORE_N (NUC_N (N <>))))
11	about	7	(P <>)
12	the	14	(NP* (OP-DEF <>))
13	poor	14	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
14	coverage	7	(NP (CORE_N (NUC_N (N <>)) (PP )))
15	of	14	(PP (P <>) (NP ))
16	the	18	(NP* (OP-DEF <>))
17	student	18	(NUC_N* (N <>))
18	uprising	15	(NP (CORE_N (NUC_N (N <>))))
19	in	18	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
20	China	19	(NP (CORE_N (NUC_N (N-PROP <>))))
21	.	7	(CORE* (. <>))