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	What	7	(NP-WH (NPIP (NP-WH (PRO-WH <>))) (CORE_N ))
2	kinds	1	(CORE_N (NUC_N (N <>)) (PP ))
3	of	2	(PP (CORE_P (NUC_P (P <>)) (NP )))
4	work	3	(NP (CORE_N (NUC_N (N <>))))
5	would	7	(CORE* (OP-MOD <>))
6	they	7	(NP (PRO <>))
7	do	0	(SENTENCE (CLAUSE (PrCS (NP-WH )) (CORE (NP ) (NUC (V <>)))))
8	?	7	(CLAUSE* (. <>))