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
      (CORE
        (NP (CORE_N (NUC_N (N-PROP 0=Party) (N 1=members))))
        (NUC (AUX-TNS 2=were) (AP (CORE_A (NUC_A (V-PART 3=supposed))))))
      (CORE
        (OP-NEG 4=not)
        (CLM 5=to)
        (NUC (V 6=go))
        (PP
          (CORE_P
            (NUC_P (P 7=into))
            (NP
              (CORE_N (AP-PERI (CORE_A (NUC_A (A 8=ordinary)))) (NUC_N (N 9=shops))))))))
    (SENTENCE-PERI
      (-LRB- 10=#LRB#)
      (PrDP
        (NP
          (CORE_N
            (NUC_N (V-GER 11=dealing))
            (PP
              (CORE_P
                (NUC_P (P 12=on))
                (NP (OP-DEF 13=the) (CORE_N (NUC_N (A 14=free) (N 15=market))))))))
        (, 16=,))
      (CLAUSE (CORE (NP (PRO 17=it)) (NUC (AUX-TNS 18=was) (V 19=called))))
      (-RRB- 20=#RRB#)))
  (CLAUSE
    (, 21=,)
    (CLM 22=but)
    (CORE
      (NP (OP-DEF 23=the) (CORE_N (NUC_N (N 24=rule))))
      (NUC (AUX-TNS 25=was) (V 28=kept))
      (OP-NEG 26=not)
      (ADVP-PERI (CORE_ADV (NUC_ADV (ADV 27=strictly)))))
    (CLAUSE
      (, 29=,)
      (CLM 30=because)
      (CORE
        (NP (PRO-DEM 31=there))
        (NUC (V 32=were))
        (NP
          (CORE_N
            (AP-PERI (CORE_A (NUC_A (A 33=various))))
            (NUC_N (N 34=things))
            (PP-PERI
              (, 35=,)
              (CORE_P
                (NUC_P (P 36=such) (P 37=as))
                (NP
                  (NP (CORE_N (NUC_N (N 38=shoelaces))))
                  (NP (CLM 39=and) (CORE_N (NUC_N (N 40=razor) (N 41=blades))))))
              (, 42=,)))
          (SENTENCE-PERI
            (CLAUSE
              (PrCS
                (NP-REL (PRO-REL 43=which))
                (CLAUSE
                  (CORE
                    (CORE (NP (PRO 44=it)) (NUC (AUX-TNS 45=was) (A 46=impossible)))
                    (CORE
                      (CLM 47=to)
                      (NUC
                        (NUC (V 48=get) (PRT 50=of))
                        (NUC (NP (CORE_N (NUC_N (N 49=hold))))))
                      (PP-PERI
                        (CORE_P
                          (NUC_P (P 51=in))
                          (NP
                            (OP-DEF 52=any)
                            (CORE_N
                              (AP-PERI (CORE_A (NUC_A (A 53=other))))
                              (NUC_N (N 54=way))))))))))))))))
  (. 55=.))