Can someone please explain

What does 'R' mean in the line below:

Total P/L(after commission): +2.52 R

I have seen this a couple times recently and am guessing it is a 'unit' or something like that?

 

I have no clue, but if I were to guess I would say it stands for Realized.

 

R=Amount Risked on the trade. ie the amount you were willing to risk before being stopped out.

For example: If R is $100 then total P/L(after commission): $252

It's a use of the ideas of Van Tharp. Check out one of his books if you want more info.