Adding Lines in an Equation Editor Matrix

One of the strengths of the Equation Editor is the ability to express matrices. In some notations, matrices are shown with lines between the elements of the matrix. To add lines, follow these steps:

1. Select the matrix.
2. Choose the Matrix option from the Format menu. The Equation Editor displays the Matrix dialog box. (Click here to see a related figure.)
3. Use the mouse to click in the space between the matrix cells. Each click in the same space produces a different type of line--the first click results in a solid line, the second in a dashed line, the third in a dotted line, and the fourth click removes the line.
4. Click on OK.