MyCSS_PROPERTY_TYPE_BORDER_INLINE_START_WIDTH

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_TYPE_BORDER_INLINE_START_WIDTH = mycss_property_type.MyCSS_PROPERTY_TYPE_BORDER_INLINE_START_WIDTH;

Meta