Sholes and Glidden typewriter length. The redesigned platen also introduced the modern spacing functionality (horizontal and axial movement providing letter and line spacing, respectively). The cylindrical platen became "an indispensable part of every standard [typewriter]". By the end of 1872, the appearance and function of the typewriter had assumed the form that would become standard in the industry and remain largely unchanged for the next century. Although the machine possessed a cylindrical platen and what was essentially a QWERTY keyboard, two design elements that would later become essential were lacking: the ability to write in upper and lowercase letters and "visible" print. Although the
Roller disco Roller disco A roller disco is a discothèque or skating rink where all the dancers wear roller skates of some kind (traditional quad or inline). The music played is modern and easily danceable, historically disco but in modern times including almost any form of dance, pop or rock music. The concept originated as a fad in the 1970s when the disco craze was at its height, peaking around 1980 and inspiring several roller-disco magazines. In 1984 the fad arrived in the United Kingdom and many roller discos popped up all over the country , the craze has largely discontinued, although