2.1.23 [SVG11] Section 19, Animation
The specification describes Synchronized Multimedia Integration Language (SMIL) Animation.
IE9 Mode, IE10 Mode, and IE11 Mode (All Versions)
SMIL animation is not supported. In addition, no references to animation elements, properties, attributes, interfaces, or data types in other chapters of [W3C-SVG1.1] are supported.
For data types that can be animated, the default setting for the animVal attribute is animVal =