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
Typewriter in the Sky re-release of the book, Ann Patterson-Rabon of the "Spartanburg Herald-Journal" concluded: "A short novel, 'Typewriter' is a perfect afternoon read: quick, fun and only as deep as you care to go." Sandy Bauers of Knight News Service called the 1995 audio publication of the work "swashbuckling fun". Peter Haining wrote in "The Classic Era of American Pulp Magazines", ""Typewriter in the Sky", which first appeared in Unknown in 1940, is widely considered to be one of his best works." "Pulp Culture: The Art of Fiction Magazines" by Frank M. Robinson and Lawrence Davidson, listed "Typewriter in the Sky" among Hubbard's