The local language variety is "Twents". It is a dialect of the Westphalian branch of the Low German language group, which, together with Limburgs, is one of the two officially recognised regional languages of the Netherlands. Twents is spoken in all parts of Twente, but may vary from village to village in pronunciation or lexicon, though such varieties are mutually intelligible and form part of the Low German dialect continuum. Dialects are often divided into two main categories, namely East-Twents and Twents-Groafskops, though the differences are largely insignificant. The dialects work as a certain shibboleth; minor accent differences help speakers define others' place of origin. As a result, speakers do not usually refer to their dialect by the umbrella term "Twents", but rather by the name of their local variety. Speakers from Markelo, for instance, may call their dialect "Maarkels", whereas speakers from Overdinkel may state that they speak "Oaverdeenkels".