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	But	11	(CLAUSE* (CLM <>))
2	the	3	(NP* (OP-DEF <>))
3	administration	5	(NP* (NPIP (NP (CORE_N (NUC_N (N <>))))))
4	's	3	(NP* (POS <>))
5	handling	11	(NP (CORE_N (NUC_N (N <>)) (PP )))
6	of	5	(PP (P <>) (NP ))
7	the	10	(NP* (OP-DEF <>))
8	fetal-tissue	10	(NUC_N* (N <>))
9	transplant	10	(NUC_N* (N <>))
10	issue	6	(NP (CORE_N (NUC_N (N <>))))
11	disturbs	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (V <>)) (NP ))))
12	many	13	(CORE_N* (QP-PERI (CORE_Q (NUC_Q (QNT <>)))))
13	scientists	11	(NP (CORE_N (NUC_N (N <>))))
14	.	0	(SENTENCE (. <>))