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Imagick::resetImagePage — Reset image page
$page
   ) : boolThe page definition as a string. The string is in format WxH+x+y. 此方法在Imagick基于ImageMagick 6.3.6以上版本编译时可用。
page
       The page definition. For example 7168x5147+0+0
      
   成功时返回 TRUE。