Editing topic subjects

Hi,
Is there a way to edit the subject of a post without ruining the contents of the topic?
I often run into this because i like to mark them as 'solved' to prevent time wasting and keeping them there as reference for future use.

marking as solved is not advised here, as leaving a topic open for a potential better/different solution's is what GD strives for.

http://www.gamedev.net/index.php?app=forums&module=forums&section=rules&f=31

Do not mark threads "answered" or "solved" in any way.

although it doesn't seem that link is anywhere in the for beginners forum anymore.