The font size slider appears beneath most grids in the program. Use it to adjust the text size within the grid:

 

oMove the slider to the right to increase the font size.

oMove the slider to the left to decrease the font size.

oThe number on the right of the slider indicates the current font size.

 

Images within the grid will also resize to match the font size adjustment.

 

To change the font style, navigate to the Appearance tab in the Options window.