Element Constructors

Tags are given as literals
XQuery expression which is evaluated to become the contents of the element is enclosed in curly braces
The contents can also contain literal text outside the braces

List titles of all books in a bib element. Put each title in a book element.

<bib>
  {
   FOR $t IN document("bib.xml")/bib/book/title
   RETURN
    <book>
     { $t }
    </book>
  }
</bib>