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4.3. Node tests

Most XPath expressions are used to select zero or more nodes from the document. For example, the XPath expression cue selects all cue child elements of the context node.

These functions are used to select certain special node sets:

This function selects all the text children of the context node.
Selects all comments that are children of the context node.
Selects all children of the context node that are processing instructions.