The label ID is used to identify every parsed tokens. ID dominates a string composed by the text-source code plus the token number, which is sequentially assigned.
An IP-MAT from the Tycho Brahe corpus:
( (IP-MAT (PP (P N@) (NP (D-F @a) (NPR Comarca) (PP (P de) (NP (NPR Miranda))))) (VB-D falou) (NP-SBJ (D-UM um) (N menino) (ADJ mudo)) (. :)) (ID G_001,41.582))           ☜ Gazeta de Manuel de Galhegos, page 41, token 582 A CP-EXL from the Wochwel corpus: ( (CP-EXL (WADVP-1 (WADV Como)) (IP-IND (ADVP *T*-1) (NP-SBJ *pro*) (HV-P as) (VB-PP traidos) (NP-ACC (Q-P todos) (PRO$-P teus) (N-P sobrinhos))) (. !)) (ID CGE374,.22))                           ☜ Crónica Geral de Espanha, chapter 374, token 22 A FRAG from the CORDIAL-SIN corpus: ( (FRAG (ADVP (ADV Agora)) (, ,) (NP (D o) (PRO$ nosso)) (NEG não) (. .)) (ID OUT40,8))               ☜ dialect interview in Outeiro, excerpt 40, token 8 An NP from the Post Scriptum corpus: ( (NP (D O) (N colete) (PP (P de) (NP (N seda))) (. .)) (ID CARDS0011,.4))                        ☜ private letter 11, token 4
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