三星微信截图后右上角为什么有个框框

三星手机进入微信截取图片时，点击捕捉下一屏，出现的右上角框框，即为当前截图图片。（以三星S6Edge手机为例）

如图所示:
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如需在微信通讯录中，一并截取多个内容图片，具体操作步骤如下：
（当截取的内容超过当前截屏时，则需通过捕捉下一屏进行截图。）
1、在主菜单中，点击选择“微信”；
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2、进入微信，点击选择“通讯录”；
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3、在通讯录中，对所需内容进行截图；若需一并截取以下通行录内容，请点击选择“捕捉下一屏”；
（截图方法可参考：同时按住HOME键、开机键）
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4、点击选择“捕捉下一屏”，右上角出现截图小框框，截图小框框为当前截图图片。
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