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Attribute: select (of element <copy-of>)

Standard excerpt:

The required select attribute contains an expression. When the result of evaluating the expression is a result tree fragment, the complete fragment is copied into the result tree. When the result is a node-set, all the nodes in the set are copied in document order into the result tree; copying an element node copies the attribute nodes, namespace nodes and children of the element node as well as the element node itself; a root node is copied by copying its children. When the result is neither a node-set nor a result tree fragment, the result is converted to a string and then inserted into the result tree, as with xsl:value-of. Examples (xslt:xml): Overview

Interactive xlab: