Original sentence: An official or de facto standard Flemish language as such does not exist.However, the word "Flemish" 1may refer to one or more of several varieties of the Dutch language spoken in Flanders.One of these varieties is the standard Dutch spoken (especially written) in Belgium, which is slightly different from the standard in The Netherlands in vocabulary and idiom
Edited sentence: An official or de facto standard Flemish language as such does not exist: there are however variants of the Dutch language (which is one and undivided, as guaranteed by the Taalunie, an organisation set up by the governments of the Netherlands and the Flemish region) spoken in Belgium) which are, mainly for political reasons, sometimes referred to as "Flemish".One of these variants is the standard Dutch spoken (especially written) in Belgium, which is slightly different from the standard in The Netherlands in vocabulary and idiom