Insert ▶ Table/Matrix ▶ New...
New
opens a dialog for generating a table or matrix.
Details
- Specify the following in the Table/Matrix dialog:
-
Table make a grid with no special options Matrix make matrix rows/columns the width of the widest element Fill with specify initial values for elements Fill diagonal specify initial values for diagonal elements - Keyboard shortcuts:
(Windows); 
(Macintosh); 
(Linux).