8. A programmed learning text according to claim 7, wherein the camouflaging means comprises a predetermined pattern printed on said page and covering said projection.
7. In a programmed learning textbook, of the kind having a plurality of multiple-choice self-test questions, some of said questions having a plurality of adjacent indicia corresponding to a plurality of possible answers on at least one page of the textbook, the improvement comprising: at least one projection, perceptible by touch, embossed in said page adjacent one of said indicia; and camouflaging means upon said projection, visually camouflaging the presence of said projection, said camouflaging means not interfering with the touch perceptibility of said projection.