RT Needle?

I am knitting a pair of slipper boots. I am have knit the whole boot up to the ankle and about to begin the top flap with button holes. The first instruction says, “Slip the first 10 sts of round onto rt needle. This is the new beg of row and you are now working back and forth on two circ needles.” What is the rt needle? Thanks!

Rt needle would be right needle.

Ok great! Thank you for your help!