An update

I was talking about this.

the formulas to how the skills work within the skills themselves!

Again, you are mistaken.

You aren't the only one, so for everyone else, the "formulas" Fiel mentioned are nothing more than a shorthand way of describing skill variables. For example, Iron Body is listed as adding "10x" defense, where x is the level of Iron Body, rather than the specific defense at every level.