This attribute determines the character font index used when
drawing each element of a plot. It takes a separate value for
graphical element so that, for instance, the setting
Font(title)=2 causes the title to be drawn using font number 2.
The range of integer font indices available and the appearance
of the resulting text is determined by the PGPLOT graphics package,
but include:
- A simple single-stroke font (the default)
- A roman font
- An italic font
- A script font