int plaintext(odocstream &, OutputParams const &) const;
///
int docbook(odocstream &, OutputParams const &) const;
+ /// For now, this does nothing. Someone who knows about this
+ /// should see what needs doing for XHTML output.
+ docstring xhtml(odocstream &, OutputParams const &) const;
/// Update needed features for this inset.
void validate(LaTeXFeatures & features) const;
///