Depends on the CFI
My paint points have always been,
Airspace
What do you need to get in it, who do you talk to and when, what are the wx requirments, what are the equipment requirments and pilot requirments.
Charts
Be able to pick all the airspace out, which airports are controlled, which have fuel, basically all the stuff on the chart key.
Aircraft,
Know how much fuel, fuel burns, how much oil your plane takes etc. If the review is in your personal aircraft the CFI will likley skip over this stuff, had a flight review my taildragger once and the CFI just glanced at the manual and asked a few questions.
Pilot
Bottle to throttle, how long is your medical valid, when do you need a flight receivew, currency for pax, what can you fly with your ticket.
Flight
I would take a customer to a nearby airport, have him do a short field takeoff and landing, maneuvers back to our original airport (steep turns, slow flight, stalls, etc), do a couple touch and goes, soft field and flapless landing.
If they were flying a backcountry plane or had a specialized mission, or just wanted to learn something new I'd add or substitute as such.
That's about that.