Use a Template with Another Page - Visualforce

You can now embed the template in a new page, filling in the blanks as you go.

1. Create a new Visualforce page called MainPage.
2. Within the page, add the following markup:

   <apex:page sidebar="false" showHeader="false">
       <apex:composition template="BasicTemplate">
           <apex:define name="body"> <p>This is a simple page demonstrating that this
                  text is substituted, and that a banner is created.</p>
           </apex:define> 
       </apex:composition> </apex:page>

The <apex:composition> component fetches the Visualforce template page you created earlier, and the <apex:define> component fills the named holes in that template. You can create multiple pages that use the same component, and just vary the placeholder text.