"Reacto&reg is a high-quality paper for making forms of all kinds, featu" ring state-of-the-art microcapsule coating. It permits copies to be madewithout using carbon paper. Copies are made by the pressure applied whi le writing, which causes the micro capsules on the underside of the sheet to burst. A special fluid is released that triggers a color reaction on the coated underlying sheet. This type of paper is therefore referred "to as color reaction or carbonless paper. Each reacto &reg form set co" nsists of the following: Top sheet - CB (coated back) with ink-releasingmicrocapsule layer on its underside. Middle sheet - CFB (coated front a nd back) with ink-absorbing layer on the front and ink- releasing microcapsule layer on the back. Bottom sheet - CF (coated front) with ink-absorbing layer on the front.