cant fully understand what these lines mean?

[transgalactic2]

typedef int Elem;  //whenever you say Elem you mean int
typedef struct cell Cell;  //Cell is instead of saying struct cell
typedef Cell * Matrix; //we use a pointer instead of saying what??

struct cell {
	int row;
	int col;
	Cell * right;
	Cell * down;
	Elem value;
};

[tabstop]

No, you use "Matrix" instead of "Cell *".

[transgalactic2]

thanks