Include Template

You can use the <includetemplate> tag to include the template body of another template in your Salesforce organization. For instance, you can use this if you use common style sheets, or want to reuse a header or footer in several reports.

Syntax: <include_template name="NameOfTemplateToInclude" />

Where NameOfTemplateToInclude is the name of the template that you want to copy the content from.