 The latest version, CLAWS4, includes improvements such as more powerful word-sense disambiguation (WSD) abilities, and the ability to deal with variation in orthography and markup language.Later work on the tagging system looked at increasing the success rates in automatic tagging and reducing the work needed for manual processing, while maintaining effectiveness and efficiency by introducing software to replace some of the manual work.Subsequently, a new program called the "Template Tagger" was introduced for a corrective function.