href =
CDATA --
Link reference (URL or file name).
/>
Parent Element(s): <annotation/> -- Tag enclosing a user-defined annotation.
<filter/> -- Generic filter definition.
<inputs/> -- Container of inputs.
<outputs/> -- Container of outputs.
<page/> -- Document page containing a single image and annotations.
<region/> -- Region of interest defined by a polygon or rectangle and annotated.
<wandoc/> -- Root element of a Wanda document annotation.
