Use page templates to standardize your content.
Templates are initially created as Default templates. If you want to change the template type to either a New Page or Content template, you must edit the template properties. The selection you make controls how templates are made available to your authors.
Default Templates are referenced by other templates for inclusion but aren't surfaced in the Insert Template dialog or the New page dialog.
New Page Templates
Use New Page templates to enforce a consistent layout or article organization for pages such as FAQs, troubleshooting articles, API documentation, product guides, and more.
You may want to use Content Templates to standardize elements of your page layout such as formatted recurring sections or formatted notes.