11.   Made of layers of semiconducting polymers and insulating film, they use graphite ink as electrodes.

12.   Photocopying ink can be used to make mustard gas.

13.   Some ticket designers use inks that change colors or are invisible without special lights or equipment.

14.   The black ink is used for text, while all four colors may be used in printing graphics.

15.   The messages could be applied with silk screening, embossing or laser imprinting, using edible inks, gum paste or food decorations.

16.   The Pilot survey says men who use blue ink are not likely to be helpful to their bosses.

17.   To combat the sale of counterfeit items at the Olympics, the Sydney Olympics organizing committee is using ink containing DNA to mark official merchandise.

18.   Using ink, he blotted out the faces of the party functionaries who had been purged by Stalin after the book was published.

19.   With Geoworks it can produce acceptable output only at the highest-quality setting, which slows it down and uses more ink.

20.   Also, color-shifting ink will be used so that the greenback will take on a different hue when viewed from an angle.