The Extract Typedef refactoring method changes the selected declaration of a type to the typedef definition. You can apply Extract Typedef when a declaration is cumbersome, potentially confusing, or likely to vary from one implementation to another, or just to make code presentation clearer and more readable.

For example, in the code fragment below, you could place the caret at the type declaration:

and press &shortcut:CIDR.Lang.IntroduceTypedef; (Refactor | Extract Typedef).

This will result in the following: