`method requiredFeatures : stringList Js_of_ocaml__.Js.t Js_of_ocaml__.Js.optdef Js_of_ocaml__.Js.readonly_prop`

- deprecated

  Removed in SVG 2.

`method requiredExtensions : stringList Js_of_ocaml__.Js.t Js_of_ocaml__.Js.readonly_prop`
`method systemLanguage : stringList Js_of_ocaml__.Js.t Js_of_ocaml__.Js.readonly_prop`
`method hasExtension : Js_of_ocaml__.Js.js_string Js_of_ocaml__.Js.t -> bool Js_of_ocaml__.Js.t Js_of_ocaml__.Js.meth`

- deprecated

  Removed in SVG 2.