XSLT 2.0 and XPath 2.0 Programmer's Reference, 4th Edition (412 page)

Examples

Expression	Description
@category	Abbreviation for attribute::category .
@xml:space	Abbreviation for attribute::xml:space .
@*	Abbreviation for attribute::* (selects all attributes of the context node).
@xsl:*	Abbreviation for attribute::xsl:* (selects all attributes in the namespace bound to the prefix xsl).

The
..
Abbreviation

The construct
..
appearing as an abbreviated step is short for
parent::node()
. As such, it selects the parent of the context node. If the context node has no parent (that is, if it is the root of a tree), then it selects an empty sequence.