Digital BW, The Print

At 12:12 AM 1/21/2003 +0000, DigitalBlackandWhiteThePrint@yahoogroups.com 
wrote:
>If you want warm tones, print with only the black inks turned on. Very
>warmtone look.

What does this MEAN?    How do you only turn on
the black inks?   The Black Only" setting only turns
on the black ink, not the black inks.