fn:copy-of
Makes a deep copy of a node sequence (typically streamed nodes, to allow navigation within the subtree rooted at each node). The zero-argument form applies the function to the context item (which must be a node).
copy-of() ➔ node()
| There are no arguments | |||
| Result | node() | ||
copy-of($source as node()*) ➔ node()*
| Arguments | |||
| 
 | $source | node()* | The node sequence to be copied | 
| Result | node()* | ||
Namespace
http://www.w3.org/2005/xpath-functions
Links to W3C specifications
Notes on the Saxon implementation
Implemented since Saxon 9.5 for use in XSLT 3.0. Since Saxon 9.6 the function is also made available in XQuery.