# The ExtPos feature

The ExtPos feature was introduced to facilitate the annotation of idioms, titles, and other multi-word units which behave like a certain part of speech, even though none of their constituents necessarily carry that part of speech. This feature allows the annotator to preserve the internal syntactic relationships between the various components of these units.

See Idioms and titles page for examples of idioms and titles annotations.

The usage of ExtPos was also generalized to cases of single tokens which are given a upos but they are used in the syntactic structure with another role.

## Examples of single tokens with an ExtPos

In Naija, it is mostly used for adjective used as verbs.

Naija

In French, it is mainly used for: