@Bhaktavatsalam Nallanthighal, Indeed, "this" refers back to the speaker though the function is different from "I". If I say "This is mustafa", it reads as "the one that is conversing to the phone is mustafa. So, this=the one who is talking about the phone Lucidchart es una aplicación de diagramación https://martinounop.bloggosite.com/43745349/considerations-to-know-about-telemedicina