Final answer:
Looking at the HTML code on a website using a web page editor allows you to edit, change attributes, and ensure the formatting and structure are correct.
Step-by-step explanation:
When using a Web page editor, looking at the HTML code of a website can be useful for several reasons. One reason is to edit work already done on the page. Sometimes, certain changes or customizations can only be made by directly modifying the HTML code. Another reason is to change attributes that the editor cannot change. The editor may have limitations on certain elements, but by accessing the HTML code, you can make the desired changes. Lastly, looking at the HTML code can help you make sure that the formatting and structure of your work is correct. It allows you to ensure that everything is in place and organized as intended.