For a normal user, perhaps the first hypothesis will be the inclusion of a page in the other with the tag <iframe> or <frame>. For pages use include.

But wapkiz helped us to use this criterion, but this happens internally, we just need to include the code ":incluide=PAGE_ID:" and the page will automatically be included.

First you have to know the page IDs, see below.

Then just insert the code, example below.

:*include=2:

In the example above, the page with id 2 will be shown. Only the page content is shown without the header and footer.

HEADER and FOOTER pages that have ids -1 and -2 simultaneously cannot be included using the include code as they are automatically included.