void write(Buffer const & buf, std::ostream & os) const;
///
void read(Buffer const & buf, LyXLex & lex);
///
void validate(LaTeXFeatures & features) const;
///
void write(Buffer const & buf, std::ostream & os) const;
///
void read(Buffer const & buf, LyXLex & lex);
///
void validate(LaTeXFeatures & features) const;
///