I'm new to WordPress and what I want to do is to edit the HTML of a specific page in WordPress. For example, a page in my website shows in the source code (in Chrome) a list, that I can see in the normal browser view, but when I get to the dashboard and search for the template the specific page uses, I cannot see the list.
How can I find the specific part of the page that I need to edit, either using WordPress interface or HTML code done by hand.
What I need to do is to modify the HTML page I see on the source code in my browser.