This is a hyphen (-). It has the same function as the code
or the symbol -. It comes in handy when an editor wishes to make explicit that they really do intend a hyphen, to discourage other editors from changing it to an ndash or other punctuation, or when using an explicit hyphen may cause technical issues, such as with the
wiki syntax for language converter. By allowing
to be coded instead of
, it avoids objections to HTML escaping. (There does not seem to be a symbolic escape e.g.