2.1.19 [SVG1.1:2011] Section 16.7, Magnification and panning
The outermost 'svg' element in an SVG document fragment has attribute zoomAndPan, which takes the possible values of disable and magnify, with the default being magnify. If disable, the user agent shall disable any magnification and panning controls and not allow the user to magnify or pan on the given document fragment. If magnify, in environments that support user interactivity, the user agent shall provide controls to allow the user to perform a "magnify" operation on the document fragment. If a zoomAndPan attribute is assigned to an inner 'svg' element, the zoomAndPan setting on the inner 'svg' element will have no effect on the SVG user agent. Animatable: no.
IE9 Mode, IE10 Mode, IE11 Mode, and EdgeHTML Mode (All Versions)
The zoomAndPan attribute is not supported, except for the default magnify operation.