-"background" with all elements and for @c SPAN elements the @c "color", @c
-"font-size" and @c "font-weight" are additionally recognized.
+"background" with all elements and for @c SPAN elements a few other styles are
+additionally recognized:
+ - @c color
+ - @c font-family
+ - @c font-size (only in point units)
+ - @c font-style (only "oblique", "italic" and "normal" values are supported)
+ - @c font-weight (only "bold" and "normal" values are supported)
+ - @c text-decoration (only "underline" value is supported)