comment "A Selector which selects an area specified as an SVG shape.
The SVG document should either be retrievable by resolving the URI of this resource, or be included as an Embedded Resource using cnt:Content.
It is RECOMMENDED that the document contain only a single shape element and that element SHOULD be one of: path, rect, circle, ellipse, polyline, polygon or g. The g element SHOULD ONLY be used to construct a multi-element group, for example to define a donut shape requiring an outer circle and a clipped inner circle.
The dimensions of both the shape and the SVG canvas MUST be relative to the dimensions of the Source resource. For example, given an image which is 600 pixels by 400 pixels, and the desired section is a circle of 100 pixel radius at the center of the image, then the SVG element would be: <circle cx="300" cy="200" r="100"/>
label "SvgSelector" (en)