Find out the Source Link of Replacement

There are many functions in different scripts, and it took time to have a brief understanding on each function and how they are organized in different scripts. We would like to know what kind of sources replace the ad, and finally, we found out the source is not a local file in the extension, but a link to a website.

In our case, we are not going to set up a website. As we need to change the content in the replacement, it may be easier to use a local html file.

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