What happens to files in the G system?

Dunno, lets ask:
@(Myfile?,FILE$)

Se, I have used the attribute operator, $, in my second argument. Take the name Myfile, and go match up with any atribute named FILE. If the result is null, then G dispensed with files, or files dsn't speak TE.

Really, do files stick around? Sure underneath the raw data store engine. Yet, I can see a formatted disk concept of row/column store, a sort of mechanical linked list.