Some bytes have been replaced with the Unicode substitution character while loading file substitution character replaced Unicode loading bytes while Some have
需要修改一较旧的网页代码，当打开时，却出现异常提示：
Some bytes have been replaced with the Unicode substitution
character while loading file 【文档路径】 with
Unicode(UTF-8) encoding. Saving the file will not preserve the
original file contents.
点“OK”，文档是可以打开，但是一些中文不能正常显示，如下箭头所指。
如何办？ 新建与较新的文档却没有这种情况。说明确定开发的电脑是支持UTF-8的。
不过，还是得检查电脑的设置。
打开Control Planel--> Clock and Region --> Region --> open "Administrative" tab -->
click "Change system locale..." button -->
把上面的Beta: Use Unicode UTF-8 for worldwide language support选项去选。
系统提示重启，设置才会生效。
再次打开文档，显示正常：
