comment()

The comment() node test retains comment nodes, which are children and siblings of element nodes or are children of the root node. Consider the following XML document.

 <?xml version="1.0" encoding="ISO-8859-1"?> <!- here is an Insured -> <Insured><CarPolicy><!- Cancelled -></CarPolicy></Insured> 

The next expression resolves to the contents of the second comment, including the space that precedes and follows the word Cancelled.

 /descendant::comment()[2]