[Gimp-user] Lighten / Darken tool is where?

[pfaoro <forums gimpusers com>]

I've found most of the tools I want (color balance / lasso, etc.) but I can't
find the tool to lighten / darken images, selections, or layers.  Where can I
find such a tool?  Is it in a drop-down? what is it called? is it a toolbox
icon?

Thanks! 

-- 
pfaoro (via www.gimpusers.com/forums)