R mtcars dataset, meaning of “vs” variable?

Question

What does the \"vs\" variable mean in the \"mtcars\" dataset in R? The helpfile says it means \"V/S\" but that is not enlightening.

Commands:

data(mt         


        

Answer 1

I think it's whether the car has a V engine or a straight engine. I'm basing this on the foot note on the page numered 396 of http://www.mortality.org/INdb/2008/02/12/8/document.pdf