Hi Ted,

See JE McGoimpsey's explanation at:

http://www.mcgimpsey.com/excel/formulae/doubleneg.html

--
Regards,
Norman



"Ted Metro" wrote in message
...
Sometimes I'll see a dash-dash used in a formula like -

--trim
or
--left

What does that double-dash do when it's infront of the function, and why
use
'--trim' instead of just 'trim'?

Ted