I see a lot of for sale ads, saying "has rust in usual places".
What the hell is this rust in usual places, & who decides where this is?

I have 29, (I think), 70s holdens, & most have zero rust, & the ones that do have any rust, it is bubbles in sills or 20cent hole behind rear wheels. I do have one HZ sedan with a couple rust bubbles on the scuttle in front of windscreen.
When I see cars advertised as minimal rust, & the pictures show holes to fit a hand through, I feel like challenging their honesty.

What does everyone on here consider usual rust?