the Turner gymnastic clubs by Johann C. F. GutsMuths and Friedrich L. Jahn. In Great Britain, it was first practiced at the Caledonian Games. Initially, vaulting poles were made from stiff materials such as bamboo or aluminum. The introduction of flexible vaulting poles in the early 1950s made from composites such as fiberglass or carbon fiber allowed vaulters to achieve greater height. In 2000, IAAF rule 260.18a (formerly 260.6a) was amended, so that "world records" (as opposed to "indoor world records") can be set in a facility "with or without roof". This rule was not applied retroactively. With many indoor facilities not conforming to outdoor track specifications for size and flatness, the pole vault was the only world record set indoors until 2022. Modern vaulting Today, athletes compete in the pole vault as one of the four jumping events in track and field. Because the high jump and pole vault are both vertical jumps, the competitions are conducted similarly. Each athlete can choose at what height they would like to enter the competition. Once they enter, they have three attempts to clear the height. If a height is cleared, the vaulter advances to the next height, where they will have three more attempts. Once the vaulter has three consecutive misses, they are out of the competition and the highest height they cleared is their result. A "no height", often denoted "NH", refers to the failure of a vaulter to clear any bar during the competition. Once the vaulter enters the competition, they can choose to pass heights. If a vaulter achieves a miss on their first attempt at a height, they can pass to the next height, but they will only have two attempts at that height, as they will be out once they achieve three consecutive misses. Similarly, after earning two misses at a height, they could pass to the next height, when they would have only one attempt. The competitor who clears the highest height is the winner. If two or more vaulters have finished with the same height, the tie is broken by the number of misses at the final height. If the tied vaulters have the same number of misses at the last height cleared, the tie is broken by the total number of misses in the competition. If there is still a tie for first place, a jump-off occurs to break the tie. Marks achieved