Pragmatic markers: short expressions such You know, I mean or Well, that indicate the speaker’s attitude to the listener or the utterance.
Ex:
They had been reading something by Charles Wright, you know, the famous poet and well,
I mean, he’s famous in America at least, but em they didn’t really understand it
After making a statement about the poet, the speaker uses well to mark a shift from conveying information to commenting on it, with I mean introducing a clarification