yeah, its when someone says "i need this job done in 2 weeks, i will pay you 4500 to do it"...

and you can milk it out, and take the 2 weeks to do it, but you wont get paid any more, because you have a set salary, or, you can bang it out in 5 days, and go on to other things...

technically increasing your pay..

gotta be good at what you do tho, otherwise people like me have to come in and fix it, which i have done many many times...