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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(SENTENCE
  (CLAUSE
    (CORE
      (CORE
        (NP (CORE_N (NUC_N (N 1=concerns)) (AP-PERI (CORE_A (NUC_A (A 0=Environmental))))))
        (NUC (V 3=beginning)))
      (CORE
        (NUC
          (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 6=as))))
          (NP
            (CORE_N
              (NUC_N (N 8=influence))
              (CLAUSE-PERI
                (CORE
                  (NP
                    (CORE_N
                      (NUC_N (N 15=price))
                      (PP-PERI
                        (CORE_P
                          (NUC_P (P 16=of))
                          (NP (CORE_N (NUC_N (N 17=crude)))))))
                    (OP-DEF 14=the))
                  (CLM 13=as)
                  (NUC (V 18=does))))
              (PP-PERI
                (CORE_P
                  (NUC_P (P 9=in))
                  (NP (CORE_N (NUC_N (N 12=plans) (N 11=spending) (N 10=oil-industry))))))
              (AP-PERI (CORE_A (NUC_A (A 7=much)))))))
        (CLM 4=to)
        (NUC (V 5=have))))
    (OP-TNS 2=are)
    (. 19=.)))

				[...wait for it...]

(SENTENCE
  (CLAUSE
    (CORE
      (CORE
        (NP (CORE_N (AP-PERI (CORE_A (NUC_A (A 0=Environmental)))) (NUC_N (N 1=concerns))))
        (NUC (V 3=beginning)))
      (CORE
        (CLM 4=to)
        (NUC (V 5=have))
        (NP
          (CORE_N
            (AP-PERI
              (CORE_A
                (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 6=as))))
                (NUC_A (A 7=much))))
            (NUC_N (N 8=influence))
            (PP-PERI
              (CORE_P
                (NUC_P (P 9=in))
                (NP (CORE_N (NUC_N (N 10=oil-industry) (N 11=spending) (N 12=plans))))))
            (PP-PERI
              (CORE_P
                (NUC_P (P 13=as))
                (CLAUSE
                  (CORE
                    (NP
                      (OP-DEF 14=the)
                      (CORE_N
                        (NUC_N (N 15=price))
                        (PP (P 16=of) (NP (CORE_N (NUC_N (N 17=crude)))))))
                    (NUC (V 18=does))))))))))
    (OP-TNS 2=are))
  (. 19=.))

Supertags

	token	arc	supertag
1	Environmental	2	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
2	concerns	4	(NP (CORE_N (NUC_N (N <>))))
3	are	4	(CORE* (OP-TNS <>))
4	beginning	0	(SENTENCE (CLAUSE (CORE (CORE (NP ) (NUC (V <>))))))
5	to	6	(CORE* (CLM <>))
6	have	4	(CORE* (CORE (NUC (V <>)) (NP )))
7	as	8	(CORE_A* (ADVP-PERI (CORE_ADV (NUC_ADV (ADV <>)))))
8	much	9	(CORE_N* (AP-PERI (CORE_A (NUC_A (A <>)))))
9	influence	6	(NP (CORE_N (NUC_N (N <>))))
10	in	9	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (NP ))))
11	oil-industry	13	(NUC_N* (N <>))
12	spending	13	(NUC_N* (N <>))
13	plans	10	(NP (CORE_N (NUC_N (N <>))))
14	as	9	(CORE_N* (PP-PERI (CORE_P (NUC_P (P <>)) (CLAUSE ))))
15	the	16	(NP* (OP-DEF <>))
16	price	19	(NP (CORE_N (NUC_N (N <>)) (PP )))
17	of	16	(PP (P <>) (NP ))
18	crude	17	(NP (CORE_N (NUC_N (N <>))))
19	does	14	(CLAUSE (CORE (NP ) (NUC (V <>))))
20	.	0	(SENTENCE (. <>))