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
        (CORE_N (NUC_N (N-PROP 0=Comrade) (N-PROP 1=Ogilvy)))
        (SENTENCE-PERI
          (, 2=,)
          (CLAUSE
            (PrCS (NP-REL (PRO-REL 3=who)))
            (OP-TNS 4=had)
            (CORE
              (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 5=never))))
              (NUC (V 6=existed))
              (PP-PERI
                (CORE_P
                  (NUC_P (P 7=in))
                  (NP (OP-DEF 8=the) (CORE_N (NUC_N (N 9=present))))))))
          (, 10=,)))
      (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 11=now))))
      (NUC (V 12=existed))
      (PP-PERI
        (CORE_P
          (NUC_P (P 13=in))
          (NP (OP-DEF 14=the) (CORE_N (NUC_N (N 15=past))))))))
  (CLAUSE
    (, 16=,)
    (CLM 17=and)
    (CORE
      (CLAUSE-PERI
        (CLM 18=when)
        (CORE
          (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 19=once))))
          (NP
            (OP-DEF 20=the)
            (CORE_N
              (NUC_N (N 21=act))
              (PP (P 22=of) (NP (CORE_N (NUC_N (N 23=forgery)))))))
          (NUC (AUX-TNS 24=was) (V 25=forgotten)))
        (, 26=,))
      (NP (PRO 27=he))
      (OP-MOD 28=would)
      (NUC (V 29=exist))
      (ADVP-PERI
        (CORE_ADV
          (NUC_ADV
            (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 30=just))))
            (ADV 31=as)
            (ADV 32=authentically))))
      (PP-PERI
        (, 33=,)
        (CLM 34=and)
        (CORE_P
          (NUC_P (P 35=upon))
          (NP
            (OP-DEF 36=the)
            (CORE_N (AP-PERI (CORE_A (NUC_A (A 37=same)))) (NUC_N (N 38=evidence)))))
        (, 39=,))
      (PP-PERI
        (CORE_P
          (NUC_P (P 40=as))
          (NP
            (NP (CORE_N (NUC_N (N-PROP 41=Charlemagne))))
            (NP (CLM 42=or) (CORE_N (NUC_N (N-PROP 43=Julius) (N-PROP 44=Caesar)))))))))
  (. 45=.))