Meta info for a template?

Is there a way to add info inside a template that wouldn't get rendered that could be used by developers for documentation. Some way to comment that isn't rendered.

As templates grow on larger sites it might help a team of developers understand basic information about a particular template.

We currently use careful file and folder name conventions and share with our small dev team. Sometimes <perch:help> works too.

The elegance of the format used to on the github solutions page is quite nice although may not be a right fit. We could use <!-- Template name and purpose --> but that would get rendered on the public facing html.

Ex:

• Created by: Joe Bloggs
• Created date: 2014-03-11
• Last updated: 2014-03-11
• Authors: Joe Bloggs
• Title: Template title
• Purpose: Description of template.