Want to add Meta Description tag to each page.

I'm a noob when it comes to PunBB.  I thought I would get that out there right away.

I would like to add the meta description tag to every page on my discussion forum and have it be the same as the page title.  Is there a way to do this easily?

I'm thinking if I add the tag to the main.tpl and use a variable to pull in the the page title that would work.... but don't know if a variable exists or how to use/implement one.

Any help is appreciated.