MyCSS_PROPERTY_TEXT_DECORATION_LINE_OVERLINE

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum MyCSS_PROPERTY_TEXT_DECORATION_LINE_OVERLINE = mycss_property_text_decoration_line.MyCSS_PROPERTY_TEXT_DECORATION_LINE_OVERLINE;

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