Exporting Variable info

Okay, so I'm making a campaign. All maps in the campaign have certain triggers in common (Many of them). Part of these triggers are a number of variables. Instead of having to recreate each variable when I start work on a new map, is there an easy way of Exporting/Importing the variable information? Note: I'm not looking for a way to keep the information stored in those variables in the campaign, I just want this for map making purposes.

I knew you could export Triggers, I just hadn't done it yet, so didn't realize the variables came with it.. question answered :P.

What about the gameplay constants, can those be exported? I notice you can set them in the campaign editor, which I am assuming will set the default GC's in all maps in that campaign to those values.