A template is a list of sections — the skeleton a page is built from. Two pages follow the same template when they run the same sections in the same order; the words and photos differ, the skeleton does not. Every page that builds is filed below, and each one shows how it differs from its template: − section it leaves out,+ section it adds.
One-of-a-kind layouts. Where several share a shape they are grouped together — that is a template waiting to be named.