A value an expression is evaluated against or returns.
Covers the value types defined by XPath 1.0: tree nodes, attributes, and computed strings, numbers and booleans. Any
selected value can be the target of a further selection; computed values have no tree, so selecting from them
returns nothing.
A value an expression is evaluated against or returns.
Covers the value types defined by XPath 1.0: tree nodes, attributes, and computed strings, numbers and booleans. Any selected value can be the target of a further selection; computed values have no tree, so selecting from them returns nothing.