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	governor	5	(NP (CORE_N (NUC_N (N <>))))
3	could	5	(CORE* (OP-MOD <>))
4	n't	5	(CORE* (OP-NEG <>))
5	make	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (NP ))))
6	it	5	(NP (PRO <>))
7	,	12	(CLAUSE* (, <>))
8	so	12	(CLAUSE* (CLM <>))
9	the	11	(NP* (OP-DEF <>))
10	lieutenant	11	(NUC_N* (N <>))
11	governor	12	(NP (CORE_N (NUC_N (N <>))))
12	welcomed	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (NP ))))
13	the	15	(NP* (OP-DEF <>))
14	special	15	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
15	guests	12	(NP (CORE_N (NUC_N (N <>))))
16	.	0	(SENTENCE (. <>))