User talk:188.73.232.73

Category pages
Hello, I noticed you are attempting to add items directly to a category. A category page is merely a collection of related and existing Wikipedia articles or pages. In Wikipedia, we do not add pages to a category by editing the category page, we add them by linking to the category from the individual articles' pages.

Please see Help:Category and note the section Help:Category.

And please read FAQ/Categorization as it states what I'm saying in a nutshell.

Add the category to the article, not the other way around.

Thank you and have a great day! --DB1729 (talk) 16:19, 23 January 2021 (UTC)

You have been editing a category page.
Regarding your edits such as this: That page is Category:Road tunnels in Greece. Note the first word in the title is "Category". That's because it is a category. It's not an article, it is not a list page. A category is merely a group of existing Wikipedia articles that are related in some way and they are edited in a completely different way. Adding WP articles to categories is explained above. Please read Categorization and Help:Category. Thank you. --DB1729 (talk) 16:12, 24 January 2021 (UTC)