method alpha : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method depth : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method stencil : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method antialias : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method premultipliedAlpha : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop
method preserveDrawingBuffer : bool Js_of_ocaml__Js.t Js_of_ocaml__Js.prop