What we want to do is create a reference guideline.

She sees ghosts,” said Samuel, impatient with my whining.

"I see dead people,” I deadpanned back. Oddly, it was Uncle Mike who laughed. I hadn’t thought he’d be a moviegoer.

You made reference to the president ...

Somebody made a reference to it,

Vulcan?" Leo demanded. "I don't even LIKE Star Trek!

No difference, only a time reference.