outline
{class:text style info, on styles:{plain, all caps}, off
styles:{italic, underline, outline, shadow, condensed, expanded, strikethrough,
superscript, subscript, superior, inferior, double underline}}
outline is a text-style constant that represents
characters that are outlined in black (or some other text color), and
white in the middle, rather than appearing as plain text. Some
applications return text values that encapsulate the style
information, such as a font and point size, instead of leaving it as
plain literal text. See all caps in this section
for more discussion of text-style constants.