Add link menu in Android application

Hi, what is the “Add link” menu in the android application? I am having trouble getting it.
I would think the creation of a link to a particular part of the document would be useful, but why add a link from the outside to a document?

@Petro, I’m afraid we’re not quite sure what you’re referring to with “Add link” menu. What exactly are you trying / hoping to do on the Android app?

I mean this menu. I am not sure what to do with it.

Thanks for the details, @Petro. This option does exactly that - create a link to any webpage of your choosing so when the selected text is clicked a browser opens and goes to the defined link. If you were to type in that box, it would open the browser with the google web page.

Perhaps this quick demonstration video will clear things up (it’s in Portuguese but I think you will get the gist)