Rearranging message list columns

[globex]

Sorry if this is the wrong forum to ask this, but I want to customize my RoundCube installation to show the message flag column (the one with the star) just before the Subject, instead of at the far right end of the table.

I can't find the file which sets the order of these columns though, can someone point me in the right direction?

Thanks.

[rosali]

./config/main.inc.php

[globex]

Thanks a lot. I didn't think it was configurable. That's great.