[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] Unicode code points fn[;] codepoints -to-string function 2nd fn[;]string-to-codepoints function 2nd union operators sequence duplicates XPath 2.0 2nd unions XPath 2.0 unordered functions (XPath 2.0) unordered sequences versus ordered sequences upper-case functions (XPath 2.0) 2nd |