The following expression contains a simple break terminating a loop.
<dolist name=’el’> <ref>list</ref> <cond><eq><ref>el</ref><s>000</s></eq> <break> <ref>el</ref> </break> </cond> <null/> </dolist>
In this example, the dolist function iterates over the elements of a list looking for value 000. The value of the dolist function is a list formed by concatenating the values that are returned by the last subexpression in each iteration.