///
int x() const;
///
+ void ix(int i);
+ ///
+ int ix() const;
+ ///
void x_fix(int i);
///
int x_fix() const;
bool boundary_;
///
int x_;
+ /// the x position of the position before the inset when we put
+ /// the cursor on the end of the row before, otherwise equal to x.
+ int ix_;
///
int x_fix_;
///