"Font FaceName size attributes"

Font Specifications
FaceName
The facename is case insensitive, so "Arial" is the same as "ARIAL" and "arial."  To specify a font which has spaces in its name, use underscores.
Size in Points
Specify a point size as above by using a single size parameter.  A "point" is 1/72 of an inch, so there are 72 points in an inch.  A font that is 14 points high is not the same size as a font that is 14 pixels high. 
Size in Pixels
To specify font size by pixel rather than by point, include parameters for both width and height in the font command.  If the width parameter is set to 0, the default width for that font face and height will be used.
Attributes
Any or all of these attributes (modifiers) can be added - italic, bold, strikeout, and underscore. 