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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Supertags

	token	arc	supertag
1	The	2	(NP* (OP-DEF <>))
2	Senate	3	(NP (CORE_N (NUC_N (N-PROP <>))))
3	rejected	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (NP ))))
4	a	6	(NP* (OP-DEF <>))
5	constitutional	6	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
6	amendment	3	(NP (CORE_N (NUC_N (N <>))))
7	that	12	(NP-REL (PRO-REL <>))
8	President	9	(NUC_N* (N-PROP <>))
9	Bush	10	(NP (CORE_N (NUC_N (N-PROP <>))))
10	sought	12	(CLAUSE-PERI (CORE (CORE (NP ) (NUC (V <>))) (CORE )))
11	to	12	(CORE* (CLM <>))
12	protect	6	(NUC_N* (CLAUSE-PERI (PrCS (NP-REL )) (CORE#WRAP# (NUC (V <>)) (NP ) (PP ))))
13	the	15	(NP* (OP-DEF <>))
14	U.S.	15	(NUC_N* (N-PROP <>))
15	flag	12	(NP (CORE_N (NUC_N (N <>))))
16	from	12	(PP (P <>) (NP ))
17	desecration	16	(NP (CORE_N (NUC_N (N <>))))
18	.	0	(SENTENCE (. <>))