+public:
+
+ /// additional per-cell information
+ struct CellInfo {
+ ///
+ CellInfo();
+ /// a dummy cell before a multicolumn cell
+ int dummy_;
+ /// special multi colums alignment
+ string align_;
+ /// these should be a per-cell property, but ok to have it here
+ /// for single-column grids like paragraphs
+ mutable int glue_;
+ ///
+ mutable pos_type begin_;
+ ///
+ mutable pos_type end_;
+ };
+