8.16.0.4
4 Svg Style
each shape and group can have multiple styles: stroke, fill etc.
sstyle is a struct, use standard struct set-SSTYLE-*! to set styles.
each style’s meaning please check the Joni’s tutorial: "Svg Pocket Guide".
(struct SSTYLE ( [fill (or/c #f string?)] [fill-rule (or/c #f 'nonzero 'evenodd 'inerit)] [fill-opacity (or/c #f (between/c 0 1))] [stroke (or/c #f string?)] [stroke-width (or/c #f number?)] [stroke-linecap (or/c #f 'butt 'round 'square 'inherit)] [stroke-linejoin (or/c #f 'miter 'round 'bevel)] [stroke-miterlimit (or/c #f (>=/c 1))] [stroke-dasharray (or/c #f string?)] [stroke-dashoffset (or/c #f number?)] [translate (or/c #f (cons/c number? number?))] [rotate (or/c #f number?)] [scale (or/c #f number? (cons/c number? number?))] [skewX (or/c #f number?)] [skewY (or/c #f number?)] [fill-gradient (or/c #f string?)] ))