Hello, eulid—and welcome to English Forums. ''It' is a dummy subject; it has no referent.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
wilpeter "It is Coke!" would have done, but reversing it gives it emphasis.I think it is more than that, wilpeter. 'It' there has a meaning akin to Webster's: