[NTG-context] Three column nomenclature settings?

Nomenclature can be considered as a type of synonyms. Therefore, I can define a nomenclature as : \definesynonyms[nomenclature][nomenclatures][\infull] \setupsynonyms[nomenclature] [criterium=all,location=serried] here I use location=serried, becasue I found the synonym is not in the same line ( higher than) the meaning. But I want a three-column nomenclature list. The first column is the synonym, the second is the meaning, the third is the si-unit of it, if the synonym has an unit. Like ------ p Pressure of xxx Pa l Length of xxx m ------- How to redefine the nomenclature command?