Template Inheritance is a plugin for Movable Type that enables you to link templates together in a way that one template inherits its template code from another template. One example is when you have two or more blogs in your MT system, and you want to use the same design or template layout for each blog. Using the Template Inheritance plugin, you can effectively use one blog's templates as master templates that control the templates of the other blogs. So if you have 3 blogs on a company site with same look and feel, this can save you a lot of time manually updating the templates of each blog every time you make a change. Another way to think of it is sharing templates between several blogs. You can link all the templates in one blog to another, or selectively choose which templates should be inherited (including template modules).
Movable Type versions: 4.3