RRGparbank

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.
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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...]

(SENTENCE
  (CLAUSE
    (CORE
      (NP
        (OP-DEF 0=The)
        (CORE_N (NUC_N (N 1=tradition)))
        (NP-PERI
          (. 2=-)
          (OP-DEF 3=the)
          (CORE_N
            (AP-PERI (CORE_A (NUC_A (A 4=unspoken))))
            (NUC_N (N 5=tradition))
            (. 6=:))
          (CLAUSE-PERI
            (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 7=somehow))))
            (CORE (NP (PRO 8=you)) (NUC (V 9=knew)) (NP (PRO 10=it)) (, 11=,))
            (CLAUSE-PERI
              (CLM 12=though)
              (CORE
                (NP (PRO 13=you))
                (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 14=never))))
                (NUC (V 15=heard))
                (NP (PRO 16=it)))
              (CORE (NUC (V 17=said)))))
          (. 18=-)))
      (NUC
        (AUX-TNS 19=was)
        (CLAUSE
          (CLM 20=that)
          (CORE
            (NP (PRO 21=they))
            (NUC (V 22=shot))
            (NP (PRO 23=you))
            (PP-PERI
              (CORE_P (NUC_P (P 24=from)) (NP (CORE_N (NUC_N (N 25=behind)))))
              (. 26=;))
            (PP-PERI
              (CORE_P
                (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 27=always))))
                (NUC_P (P 28=in))
                (NP
                  (OP-DEF 29=the)
                  (CORE_N
                    (NUC_N (N 30=back))
                    (PP
                      (P 31=of)
                      (NP (OP-DEF 32=the) (CORE_N (NUC_N (N 33=head))))))))
              (, 34=,))
            (PP-PERI
              (CORE_P (NUC_P (P 35=without)) (NP (CORE_N (NUC_N (N 36=warning)))))
              (, 37=,))
            (CLAUSE-PERI
              (CLM 38=as)
              (CORE
                (NP (PRO 39=you))
                (NUC (V 40=walked) (ADV 41=down))
                (NP (OP-DEF 42=a) (CORE_N (NUC_N (N 43=corridor))))
                (PP
                  (CORE_P
                    (NUC_P (P 44=from))
                    (NP (CORE_N (NUC_N (N 45=cell))))))
                (PP
                  (CORE_P
                    (NUC_P (P 46=to))
                    (NP (CORE_N (NUC_N (N 47=cell)))))))))))))
  (. 48=.))