The function of this function is to limit the download range of the page.
As shown in the figure, I limit two items. They are the relationship between or. Any item contained in the page link will be downloaded. The first is to download the page link to the page containing index.html; The second is that the link to the download page contains product. I assume that the product directory of the website is represented by product.
This setting is the same as other option settings.