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
    (CLAUSE
      (OP-TNS 12=will)
      (CORE
        (NP
          (CORE_N
            (NUC_N (N-PROP 8=Americans))
            (PP-PERI
              (CORE_P
                (NUC_P (P 9=With))
                (NP (CORE_N (NUC_N (N-PROP 11=Act) (N-PROP 10=Disabilities)))))))
          (OP-DEF 7=the))
        (NUC
          (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 2=how))))
          (NP
            (CORE_N
              (NUC_N (N 4=billions))
              (PP-PERI
                (CORE_P (NUC_P (P 5=of)) (NP (CORE_N (NUC_N (N 6=dollars))))))
              (AP-PERI (CORE_A (NUC_A (A 3=many)))))))
        (NUC (V 13=cost))))
    (CORE
      (CLAUSE-PERI
        (CLAUSE
          (PrCS (NP-WH (PRO-WH 18=what)))
          (CORE
            (NP (CORE_N (NUC_N (N 20=bill))) (OP-DEF 19=the))
            (NUC (V 21=entails))))
        (CORE (NP (CORE_N (NUC_N (N 16=nobody)))) (CLM 15=because) (NUC (V 17=knows))))
      (NP (CORE_N (NUC_N (N 0=Nobody))))
      (NUC (V 1=knows)))
    (. 22=.)
    (, 14=,)))

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Supertags

	token	arc	supertag
1	Nobody	2	(NP (CORE_N (NUC_N (N <>))))
2	knows	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>))) (CLAUSE )))
3	how	4	(ADV-WH <>)
4	many	5	(CORE_N* (QP-WH (CORE_Q (ADV-WH ) (NUC_Q (QNT <>)))))
5	billions	14	(NP-WH (CORE_N (NUC_N (N <>)) (PP )))
6	of	5	(PP (P <>) (NP ))
7	dollars	6	(NP (CORE_N (NUC_N (N <>))))
8	the	12	(NP* (OP-DEF <>))
9	Americans	12	(NUC_N* (N-PROP <>))
10	With	12	(P <>)
11	Disabilities	12	(NUC_N* (N-PROP <>))
12	Act	14	(NP (CORE_N (NUC_N (P ) (N-PROP <>))))
13	will	14	(CORE* (OP-TNS <>))
14	cost	2	(CLAUSE (PrCS (NP-WH )) (CORE (NP ) (NUC (V <>))))
15	,	18	(CLAUSE-PERI* (, <>))
16	because	18	(CLAUSE-PERI* (CLM <>))
17	nobody	18	(NP (CORE_N (NUC_N (N <>))))
18	knows	2	(CLAUSE* (CLAUSE-PERI (CORE (NP ) (NUC (V <>))) (CLAUSE )))
19	what	22	(NP-WH (PRO-WH <>))
20	the	21	(NP* (OP-DEF <>))
21	bill	22	(NP (CORE_N (NUC_N (N <>))))
22	entails	18	(CLAUSE (PrCS (NP-WH )) (CORE (NP ) (NUC (V <>))))
23	.	18	(CLAUSE-PERI* (. <>))