Definition
HTML Standard defines CanvasText
interface mixin CanvasText {
// text (see also the CanvasPathDrawingStyles and CanvasTextDrawingStyles interfaces)
undefined fillText(DOMString text, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
undefined strokeText(DOMString text, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
TextMetrics measureText(DOMString text);
};