<Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (January 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (January 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> Portrait mode was first used on the Xerox Alto computer, which was considered technologically well ahead of its time when the system was first developed . Xerox product marketers did not understand how revolutionary the system was, and the portrait display faded away while common landscape - display televisions were appropriated for use as an inexpensive early microcomputer display . </P> <P> The IBM DisplayWriter had a portrait monitor and keyboard with large backspace key, as it was designed for use in word processing instead of spreadsheets . Lanier, Wang, and CPT also made competing dedicated word processing computers with portrait modes . The height of the market for these computes was the late 1970s and early 1980s, prior to the introduction of the IBM PC . However, according to a long - time regional manager of the IBM personal computer division, speaking in confidence to the author of this entry in the mid-1980s, when the IBM PC was introduced, no portrait mode was made available for two reasons: (1) Top management didn't want the PC division to undermine the DisplayWriter product, (2) The computer was designed with spreadsheets and software development in mind, not word processing . Thus, it had a keyboard without a large backspace key at first, substituting a key widely used in computer software writing . Within a short period of time, the DisplayWriter and other dedicated word processors were no longer available . However, Portrait Display Labs leaped into this market niche, producing a number of rotating CRT monitors as well as software which could be used as a driver for many video cards . The later advent of the World Wide Web, whose pages are largely in portrait mode, failed to result in a widespread return to portrait displays . As of November 2011, for instance, HP no longer sells monitors in portrait mode, although they have a display stand which permits the user to attach two monitors and rotate either from landscape to display . </P>

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