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.

				[...wait for it...]

				[...wait for it...]

				[...wait for it...]

				[...wait for it...]

(SENTENCE
  (CLAUSE
    (CORE
      (NP (CORE_N (NUC_N (N-PROP 6=Shannon))))
      (SENTENCE-PERI
        (PrDP (ADVP (CORE_ADV (NUC_ADV (ADV 0=When)))))
        (CLAUSE
          (CORE
            (PP-PERI
              (CORE_P (NP (CORE_N (NUC_Q (QNT 4=1939)))) (NUC_P (P 3=in))))
            (NP (PRO 1=it))
            (NUC (V 2=opened)))))
      (NUC
        (AUX-TNS 7=was)
        (NP
          (CORE_N
            (NUC_N (N 10=landfall))
            (PP-PERI
              (CORE_P
                (NUC_P (P 13=for))
                (NP
                  (CORE_N
                    (NUC_N (N 15=airplanes))
                    (CORE-PERI
                      (PP-PERI
                        (CORE_P
                          (NUC_P (P 17=from))
                          (NP
                            (CORE_N (NUC_N (N-PROP 19=America) (N-PROP 18=North))))))
                      (NUC (V 16=flying)))
                    (AP-PERI (CORE_A (NUC_A (A 14=thirsty))))))))
            (PP-PERI
              (CORE_P
                (NUC_P (P 11=in))
                (NP (CORE_N (NUC_N (N-PROP 12=Europe))))))
            (AP-PERI (CORE_A (NUC_A (A 9=first)))))
          (OP-DEF 8=the)))
      (. 20=.)
      (, 5=,))))

				[...wait for it...]

(SENTENCE
  (PrDP
    (CLAUSE
      (CLM 0=When)
      (CORE
        (NP (PRO 1=it))
        (NUC (V 2=opened))
        (PP-PERI
          (CORE_P (NUC_P (P 3=in)) (NP (CORE_N (NUC_Q (QNT 4=1939))))))))
    (, 5=,))
  (CLAUSE
    (CORE
      (NP (CORE_N (NUC_N (N-PROP 6=Shannon))))
      (NUC
        (AUX-TNS 7=was)
        (NP
          (OP-DEF 8=the)
          (CORE_N
            (QP-PERI (CORE_Q (NUC_Q (QNT 9=first))))
            (NUC_N (N 10=landfall))
            (PP-PERI
              (CORE_P
                (NUC_P (P 11=in))
                (NP (CORE_N (NUC_N (N-PROP 12=Europe))))))
            (PP-PERI
              (CORE_P
                (NUC_P (P 13=for))
                (NP
                  (CORE_N
                    (AP-PERI (CORE_A (NUC_A (A 14=thirsty))))
                    (NUC_N
                      (N 15=airplanes)
                      (CORE-PERI
                        (NUC (V 16=flying))
                        (PP
                          (CORE_P
                            (NUC_P (P 17=from))
                            (NP
                              (CORE_N
                                (NUC_N (N-PROP 18=North) (N-PROP 19=America)))))))))))))))))
  (. 20=.))

Supertags

	token	arc	supertag
1	When	3	(CLAUSE* (CLM <>))
2	it	3	(NP (PRO <>))
3	opened	0	(SENTENCE (PrDP (CLAUSE (CORE (NP ) (NUC (V <>))))))
4	in	3	(CORE* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
5	1939	4	(NP (CORE_N (NUC_Q (QNT <>))))
6	,	3	(PrDP* (, <>))
7	Shannon	11	(NP (CORE_N (NUC_N (N-PROP <>))))
8	was	11	(NUC* (AUX-TNS <>))
9	the	11	(NP* (OP-DEF <>))
10	first	11	(CORE_N* (QP-PERI (CORE_Q (NUC_Q (QNT <>)))))
11	landfall	0	(SENTENCE (CLAUSE (CORE (NP ) (NUC (NP (CORE_N (NUC_N (N <>))))))))
12	in	11	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
13	Europe	12	(NP (CORE_N (NUC_N (N-PROP <>))))
14	for	11	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
15	thirsty	16	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
16	airplanes	14	(NP (CORE_N (NUC_N (N <>))))
17	flying	16	(NUC_N* (CORE-PERI (NUC (V <>)) (PP )))
18	from	17	(PP (CORE_P (NUC_P (P <>)) (NP )))
19	North	20	(NUC_N* (N-PROP <>))
20	America	18	(NP (CORE_N (NUC_N (N-PROP <>))))
21	.	0	(SENTENCE (. <>))