Recursive SVG
An SVG with two recursive image reference to itself.
One reference uses the file name as a relative URL,
the other uses a target fragment only.
When viewed in a processing mode that supports external file references,
the embedded images should be rendered;
however, the embedded image must be processed in secure mode,
so the recursion only happens once.
The appearance should be three nested red circles in a bulls-eye pattern;
the innermost circle has solid fill because of target styles.