Saving Subject Line

Is it possible to save just the Subject line (not the rest of the header) to a 
file?
Thanks,
David
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"Naysayers say in-lining is risky - now, imagine the widespread carnage that 
would result if several million people decided to learn how to ride bicycles 
in their mid-twenties."-- Inline magazine
"We are here to preserve democracy, not to practice it." --Crimson Tide