LONDON, May 13 (Reuters) - Britain's FTSE 100 index is seen opening around 16 points higher, or up 0.2 percent, on Wednesday, according to financial bookmakers. For more on the factors affecting European stocks, please click on
* The blue-chip index fell 1.4 percent to 6,933.80 points in the previous session. It hit a record high of 7,122.74 points last month and remains up around 6 percent since the start of 2015.
* Oil extended gains after posting its strongest daily rise in weeks in the previous session, supported by bets that U.S. crude stockpiles will fall for a second straight week as production slows.
* London copper edged down ahead of Chinese factory data, but losses were limited as the country's real estate developers pledged to boost investment after an interest rate cut, brightening the prospects for copper demand.
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