These crawls are part of an effort to archive pages as they are created and archive the pages that they refer to. That way, as the pages that are referenced are changed or taken from the web, a link to the version that was live when the page was written will be preserved.Then the Internet Archive hopes that references to these archived pages will be put in place of a link that would be otherwise be broken, or a companion link to allow people to see what was originally intended by a page's authors.The goal is to fix all broken links on the web . Crawls of supported "No More 404" sites. ||||| The Bank of England’s first plastic banknote, the new Winston Churchill fiver, will be unveiled at Blenheim Palace, the wartime leader’s ancestral home, on Thursday. 
 
 It forms part of the Bank’s switch to polymer banknotes, which will end 320 years of paper money. The Churchill fiver, which goes into circulation in September, will be the first of a series of new plastic notes, followed by the Jane Austen £10 next year and the JMW Turner £20 by 2020. 
 
 Manufactured from a transparent plastic film and coated with an ink layer, polymer banknotes are seen as cleaner, more durable and more secure than paper. The material allows the inclusion of clear “windows” to protect against counterfeits. 
 
 The faces of Britain's banknotes – in pictures Read more 
 
 They are also more environmentally friendly than paper because they can last up to two-and-a-half times longer, according to the Bank of England. It claims that the durability will offset the higher production costs and save an estimated £100m. 
 
 The Bank’s laboratory tests showed polymer banknotes only begin to shrink and melt at 120C, so they are expected to survive a washing machine spin cycle – although they could be damaged by a hot iron. 
 
 The move to polymer notes will land shops and banks with a bill of up to £236m, it has been estimated, because ATMs, vending machines and self-service machines will need to be recalibrated to take the new plastic notes, which are 15% smaller than the current notes. Some older ATMs will need to be replaced. 
 
 
 
 More than 30 countries already use polymer notes, including New Zealand, Canada, Fiji, Mauritius and Mexico. They were first introduced by Australia, in 1988. 
 
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 The Churchill fiver will replace the current £5 note featuring prison reformer Elizabeth Fry. News in 2013 that she would be replaced with the former prime minister sparked an outcry as it meant that, apart from the Queen, there would be no female figures on British banknotes. A few months later the Bank announced that writer Jane Austen would be the next face of the £10 note. 
 
 
 
 Churchill will be pictured alongside a view of Westminster with Big Ben showing 3 o’clock – the approximate time on 13 May 1940 when Churchill declared in a speech: “I have nothing to offer but blood, toil, tears and sweat.” 
 
 • This article was amended on 3 June 2016. An earlier version said that Winston Churchill will be the first statesman to feature on British banknotes. The Duke of Wellington appeared on £5 notes from 1971 to 1991. 
 

– The Bank of England introduced a five-pound note Thursday that marks the beginning of the end of a three-century run for paper money in the UK, reports the Guardian. This particular note is made of a thin plastic and designed to last more than twice as long as its paper counterpart. It features the queen on the front and Winston Churchill on the back, and it goes into circulation in September. The current five-pound paper note will remain in use for another year. Next up comes up a 10-pound plastic note featuring Jane Austen in 2017 and a 20-pound note featuring painter JMW Turner by 2020. The unveiling comes ahead of Britain's crucial vote on whether to exit the European Union, and Bloomberg notes that both sides of the debate have claimed none other than Churchill to be in their camp. Asked on Thursday about how Churchill might view the question, Bank of England Gov. Mark Carney opted to play it safe. “It’s not for me to make any inference about that,” he said.