About the use of saved from url

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0021)http://www.baidu.com/ -->
<html><title>aaaa</title>
<body>
<a href="/blog/b.htm">bbbbbbbbb</a>
</body>
</html>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><title>bbbbb</title><body>
<a href="/blog/a.htm">aaaaaaaaaaa</a>
</body>
</html>

Just because a <!-- saved from url=(0021)http://www.baidu.com/ --> was added , the result link will not work. However, the links in a complete web work can still be used.
I was depressed for a long time last night~~~~~~

<!-- saved from url=(0021)http://www.baidu.com/ -->
(0021) represents the length of the following characters
<!-- saved from url=(0019)http://www.sea.com/ -->
If you change it to this, you can make your own saved from url. This thing has been studied for a long time, and it was done today~~~~~~

The following is the official information:

When you create a web page, if the web page needs to run ActiveX or script, and they are located in a place other than the client, then you can add this comment statement, IE will of course ignore him, IE will follow the URL he pointed out to find the location of the script . What this statement does is tell Internet Explorer to use the security settings for the Internet zone, not the local computer zone. 
Please refer to Microsoft's documentation for details. 
Delete this sentence, some scripts will not be executed.
===============microsoft==========
Developers may have previously expected to be able to use the Local Computer area to run active content such as scripts and ActiveX controls . For Windows XP SP2, this method may now fail. Please use the following mitigation techniques to allow the application to continue to function properly.
Because the Local Computer area is now more restrictive than other areas, applications can use Web Markup comments in HTML files. This feature of Internet Explorer allows HTML files to be forced to a zone other than "Local Computer" so that scripts and ActiveX components can run according to different security policies. This setting is valid on Internet Explorer 4 and later.
To identify HTML downloaded from a specific domain (and thus have the security settings of the zone containing that domain applied), add the following comment with the domain name:
<!--saved from url=(0022)http://www.microsoft.com-->
The numbers in parentheses relate to the length of the URL.
To always consider a page to be part of a specific area, add the following comment with the corresponding area name:
<!--saved from url=(0013)about : internet-->

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