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 (PRO 0=It))
      (OP-MOD 1=could)
      (NUC (V 2=point))
      (PP
        (CORE_P
          (NUC_P (P 3=to))
          (NP
            (CORE_N
              (AP-PERI (CORE_A (NUC_A (A 4=plenty))))
              (PP
                (CORE_P
                  (NUC_P (P 5=of))
                  (NP
                    (CORE_N (NUC_N (N 6=ailments)))
                    (CLAUSE-PERI
                      (PrCS (NP-WH[PREDid=1] (CLM 7=that)))
                      (CORE
                        (CORE
                          (NP
                            (OP-DEF 8=the)
                            (CORE_N
                              (AP-PERI (CORE_A (NUC_A (A 9=Spanish))))
                              (AP-PERI (CORE_A (NUC_A (A 10=economic))))
                              (NUC_N (N 11=rejuvenation))))
                          (ADVP-PERI
                            (CORE_ADV
                              (ADVP-PERI
                                (CORE_ADV (NUC_ADV (ADV 12=so))))
                              (NUC_ADV (ADV 13=far))))
                          (NUC (AUX 14=has) (V 15=failed)))
                        (CORE (CLM 16=to) (NUC[NUCid=1] (V 17=cure))))))))))))
      (. 18=.))))

				[...wait for it...]

(SENTENCE
  (CLAUSE
    (CORE
      (PP
        (CORE_P
          (NUC_P (P 3=to))
          (NP
            (CORE_N
              (NUC_N (N 4=plenty))
              (PP-PERI
                (CORE_P
                  (NUC_P (P 5=of))
                  (NP
                    (CORE_N
                      (NUC_N (N 6=ailments))
                      (CLAUSE-PERI
                        (CORE
                          (CORE
                            (NUC-PERI
                              (ADVP-PERI
                                (CORE_ADV (NUC_ADV (ADV 12=so))))
                              (ADVP (CORE_ADV (NUC_ADV (ADV 13=far)))))
                            (NP
                              (CORE_N
                                (NUC_N (N 11=rejuvenation))
                                (AP-PERI (CORE_A (NUC_A (A 10=economic))))
                                (AP-PERI (CORE_A (NUC_A (A 9=Spanish)))))
                              (OP-DEF 8=the))
                            (NP[PREDid=1] (CORE_N (NUC_N (N 7=that))))
                            (NUC (V 15=failed)))
                          (CORE (CLM 16=to) (NUC[NUCid=1] (V 17=cure))))
                        (OP-TNS 14=has))))))))))
      (OP-MOD 1=could)
      (NP (PRO 0=It))
      (NUC (V 2=point))
      (. 18=.))))

				[...wait for it...]

(SENTENCE
  (CLAUSE
    (CORE
      (NP (PRO 0=It))
      (OP-MOD 1=could)
      (NUC (V 2=point))
      (PP
        (CORE_P
          (NUC_P (P 3=to))
          (NP
            (CORE_N
              (NUC_A (A 4=plenty))
              (PP
                (P 5=of)
                (NP
                  (CORE_N
                    (NUC_N
                      (N 6=ailments)
                      (CLAUSE-PERI
                        (PrCS (NP-REL[PREDID=1] (PRO-REL 7=that)))
                        (CORE
                          (CORE
                            (NP
                              (OP-DEF 8=the)
                              (CORE_N
                                (AP-PERI (CORE_A (NUC_A (A 9=Spanish))))
                                (AP-PERI (CORE_A (NUC_A (A 10=economic))))
                                (NUC_N (N 11=rejuvenation))))
                            (ADVP-PERI
                              (CORE_ADV (NUC_ADV (ADV 12=so) (ADV 13=far))))
                            (NUC (V 15=failed)))
                          (CORE (CLM 16=to) (NUC[NUCID=1] (V 17=cure))))
                        (OP-TNS 14=has))))))))))
      (. 18=.))))

Supertags

	token	arc	supertag
1	It	3	(NP (PRO <>))
2	could	3	(CORE* (OP-MOD <>))
3	point	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (PP ))))
4	to	3	(PP (CORE_P (NUC_P (P <>)) (NP )))
5	plenty	4	(NP (CORE_N (NUC_A (A <>)) (PP )))
6	of	5	(PP (P <>) (NP ))
7	ailments	6	(NP (CORE_N (NUC_N (N <>))))
8	that	16	(NP-REL (PRO-REL <>))
9	the	12	(NP* (OP-DEF <>))
10	Spanish	12	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
11	economic	12	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
12	rejuvenation	16	(NP (CORE_N (NUC_N (N <>))))
13	so	14	(ADV <>)
14	far	16	(CORE* (ADVP-PERI (CORE_ADV (NUC_ADV (ADV ) (ADV <>)))))
15	has	16	(CORE* (OP-TNS <>))
16	failed	7	(CLAUSE-PERI (CORE (CORE (NP ) (NUC (V <>))) (CORE )))
17	to	18	(CORE* (CLM <>))
18	cure	16	(NUC_N* (CLAUSE-PERI (PrCS (NP-REL )) (CORE#WRAP# (NUC (V <>)))))
19	.	3	(CORE* (. <>))