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 hockey Roller hockey Roller hockey is a form of hockey played on a dry surface using wheeled skates. Most professional inline hockey games take place on an indoor or outdoor sport court (a type of plastic interlinking tiles used to create a skating surface). Otherwise, any dry surface can be used to host a game, typically a roller rink, macadam, or cement. The term "Roller hockey" is often used interchangeably to refer to three variant forms chiefly differentiated by the equipment used. There is traditional "Roller hockey" (Quad hockey, Rink hockey), played with quad skates and a ball (without contact), "Inline