dbfo_font-size — Specifies “font-size” for block verbatim elements
<?dbfo font-size="SIZE"?>
Use the <?dbfo font-size?> PI as a child of a verbatim element (screen, programlisting, or synopsis) to specify the “font-size”.
<?dbfo font-size?>
screen
programlisting
synopsis
Specifies the font size (usually in points)