The chunker leaves all previously added information in the text and creates a structural element which includes the words of the chunk. Currently it is capable of recognizing boundaries of simple noun and verb groups.
Some errors occur because of an ambiguity in the text.
The chunker itself is a combination of a finite state transducer over SGML elements with a grammar for the detection of the syntactic groups. This grammar can employ all the fields of the SGML elements. It was, for instance, applied for the conversion of SGML markup into the LaTex markup. Detailed information on LT POS is available online. A Workbench for Finding Structure in Texts.