W3C XML Query WG - slide "XQuery Element Constructors"

XQuery element constructor consists of a start tag and an end tag, enclosing an optional list of expressions that provide the content of the element.
- (Q8) Generate an element with a computed name, containing nested elements named <description> and <price>.
```
<$tagname>
<description> $d </description>,
<price> $p </price>
</$tagname>
```