The or with bar wave or crossed out is a vowel used in some Languages such as Danish, Faroese, Norwegian or Old Basque. Typically, computer keyboards computer they do not include a key for this spelling, so it can be difficult to find when writing it. But this does not mean that it is impossible to insert into a computer document, but it is necessary to know what coding use to make it appear. In this way, in OneHowTo we explain in detail how to write the crossed out o.