# Utilities

Some of the capabilities of the Jet system can also be invoked as separate, stand-alone utilities by invoking jet with a utility name:
jet -utilityName file-argument-1 file-argument-2 ...
The following utilities are currently available:

Utility name | function
BIOWriter | convert files with XML named-entity tags to BIO format
CorefEval | evaluate coreference using Vilain's metric
CorefView | display coreference for document
CollectionView | display collection and individual documents within collection
AnnotateCollection | add annotations to documents within collection