• Qexo creates explicit nodes and sequences only when need.
• Otherwise, nodes and values are written using SAX-like eventsto an abstract Consumer interface.

for $i in (10, 20) return <p>{$i+1}</p>

becomes

void main (Consumer output) {
  temp_1(10, output);  temp_1(20, output);
}
void temp_1 (Object i, Consumer output) {
  output.beginElement("p");
  output.writeItem(NumOps.add(i, 1));
  output.endElement("p"); }