I want to design a board that is symmetrical - I have designed the left side, and now I want to copy the components and wires to the right side such that it is "mirrored" across the center line - what is the best way to accomplish this in eagle?

here is a screenshot of what I am working with:

I want to take the components inside the orange box and mirror them across the teal line, such that I can then re-incorporate them into the PCB on the left