Night writing visited the National Institute for the Blind in Paris, France, where he met Louis Braille. Braille identified the major failing of the code, which was that the human finger could not encompass the whole symbol without moving and so could not move rapidly from one symbol to another. His modification was to use a six-dot cell, the Braille system that revolutionized written communication for the visually impaired. Night writing Night writing, a.k.a. sonography, was a system of code that used symbols of twelve dots arranged as two columns of six dots embossed on a square of paperboard, and is now
Dot book Dot book A dot book (also dotbook or dot-book or drill book) is a small notebook utilized by marching bands (especially high school show bands and drum corps) in order to aid the learning of formations on a field. The dot book was invented by Leslie Allard, a prominent high school band instructor and all-star percussionist. The name is derived from the use of dots on drill sheets which symbolize players on the field: a dot book focuses on the owner's particular dots and other marchers the player may have to guide (use to determine an adjusted location). The general