Add the mode attribute set in new to be passed to the parser before evaluation. This implies you must use the hash mode of new.
Add functions for setting and getting the mode of parser evaluation
If creating, add a child element if the element type is NCName.
Add a new axis: exist::node. Which is identical to child::node unless creating in which case only test do not create any nodes for this step
If creating, add an attribute element if there is no attribute of that name
Change semantics so returns the result of the first true evaluation. Implied sequence point remains
Change semantics to return false or last true evaluation result. Implied sequence point remains.
TODO: When collecting variables, filter rhs result based on unification with lhs variables
Add creation and collection semantics
When creating, if a node occurs in a function, it is not created
Creates a new language tag from the given language tag, the script to apply to the language and an optional script to suppress
Effectively returns first || second, i.e. returns first if it is defined else returns the second. (or_string).
Set the first text node to the given value and delete all others. Insert a text node as first child node if none exists.
Add indentation support
