In a standard dictionary, where can you find they key to pronunciation mark?

In a standard dictionary, you can find the key to pronunciation marks within the definitions. It seems to be the most correct answer. Looking at dictionaries you will not see pronunciation in the appendix, at the bottom of a page or even in the front.

In a standard dictionary, you can find the key to pronunciation marks within the definition, at the bottom of each page, in the front of the dictionary. Also in an appendix, I believe.