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 the best fantasy produced in this century". A review of the book upon its 1995 re-release in the "Spartanburg Herald-Journal" characterized the story as both fantasy and science fiction, calling it a "classic science fiction fantasy adventure"; and placed it within the Golden Age of Science Fiction. "St. James Guide to Science Fiction Writers" (1996) called the story "Hubbard's most successful fiction". Marco Frenschkowski wrote in a 1999 article for the "Marburg Journal of Religion" in a bibliography of L. Ron Hubbard, and called "Typewriter in the Sky": " Classic fantasy tale about a man who discovers he is part