Is c minus delta. So I'll find you some delta so that if you take any x in the range c minus delta to c plus delta, and maybe the function's not even defined at c. So we think of ones that maybe aren't c, but are getting very close. If you find any x in that range, f of those x's are going to be as close as you want to your limit. They're going to be within the range l plus epsilon or l minus epsilon. So what's another way of saying this? Another way of saying this is you give me an epsilon. Then I will find you a delta.