Represents a namespace binding specified in an XML element.

If this pseudo-element is enabled, each namespace binding specified in an element with one of

xmlns="..."
xmlns:prefix="..."
declarations will produce a #NAMESPACE pseudo-element describing this binding. That pseudo-element will be added to the children of the given XML element.

If an XML element contains several namespace binding declarations, there will be as many #NAMESPACE pseudo-elements added to the element's real children.

All namespace bindings declared in an XML document can be obtained via #DOCUMENT/@namespaces attribute.