LIN SPAC allows you to set the amount of space between 
successive lines of text in a note or file-based note 
that is to be drawn, printed, or plotted.

Enter a line spacing factor, which must be a positive 
number. This factor is the ratio between the current text
height and the line spacing. For example, if your text
height is one inch, and your factor is 0.05, the line
spacing between lines of text is one-half inch.
