2.1.21 [SVG11] Section 17.2.2, SVG fragment identifiers
The specification states:
If the SVG fragment identifier addresses specific SVG view (e.g., MyDrawing.svg#svgView(viewBox(0,200,1000,1000))), then the document fragment defined by the closest ancestor 'svg' element is displayed in the viewport using the SVG view specification provided by the SVG fragment identifier.
IE9 Mode, IE10 Mode, and IE11 Mode (All Versions)
Parameters for viewBox elements in fragment specifications may be delimited by single spaces in addition to commas.