/// returns x offset of cell compared to inset
int cellXOffset(idx_type idx) const;
/// returns y offset of cell compared to inset
int cellYOffset(idx_type idx) const;
/// returns proper 'end of line' code for LaTeX
/// returns x offset of cell compared to inset
int cellXOffset(idx_type idx) const;
/// returns y offset of cell compared to inset
int cellYOffset(idx_type idx) const;
/// returns proper 'end of line' code for LaTeX