Soldiers operating the huge scroll that formed the centrepiece of last week's Olympic opening ceremony had to stay hidden under the structure for up to seven hours, wearing nappies because they were not allowed toilet breaks, state media reported on Friday. Nearly 900 soldiers were hidden underneath the scroll, many of them moving giant printing blocks with Chinese characters, the Beijing News reported. "The performers for Chinese character parts went into the models underground at 2 pm, and after getting in there they could not come out," the newspaper quoted choreographer Han Lixun as saying. "The underground area was so...