Punch and Judy might follow no fixed storyline, as with the tales of Robin Hood, but there are episodes common to many recorded versions. It is these set piece encounters or "routines" which are used by performers to construct their own Punch and Judy shows. A visit to a Punch and Judy Festival at Punch's "birthplace" in London's Covent Garden will reveal a whole variety of changes that are wrung by puppeteers from this basic material. Scripts have been published at different times since the early 19th century, but none can be claimed as the definitive traditional script of Punch and Judy. Each printed script reflects the era in which it was performed and the circumstances under which it was printed.