Attr Objects
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`Attr' inherits from `Node', so inherits all its attributes.
`name'
The attribute name. In a namespace-using document it may have
colons in it.
`localName'
The part of the name following the colon if there is one, else the
entire name. This is a read-only attribute.
`prefix'
The part of the name preceding the colon if there is one, else the
empty string.