What Does it mean when my hair stylist says she is cleaning up the layers?

Very simple question. What does it mean when a hair stylist says she is going to clean up my layers?What Does it mean when my hair stylist says she is cleaning up the layers?
trim them. make them look like they're there if they've grown out some. make them look ';better';What Does it mean when my hair stylist says she is cleaning up the layers?
Cutting them just a little to get the split ends off. It gives your layers a fresher look.
To make them look better