-- the values for these need to be escaped
svg_attr_val_allows_ref :: [Text]
svg_attr_val_allows_ref = ["clip-path", "color-profile", "cursor", "fill",
    "filter", "marker", "marker-start", "marker-mid", "marker-end",
    "mask", "stroke"]
svg_attr_val_allows_ref :: [Text]
svg_attr_val_allows_ref = ["clip-path", "color-profile", "cursor", "fill",
    "filter", "marker", "marker-start", "marker-mid", "marker-end",
    "mask", "stroke"]
svg_attr_val_allows_ref = ["clip-path", "color-profile", "cursor", "fill",
    "filter", "marker", "marker-start", "marker-mid", "marker-end",
    "mask", "stroke"]