Add X11R6.1 historic release page

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

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+<div itemscope itemtype="http://schema.org/SoftwareApplication">
+
+# <span itemprop="name">X Window System</span>, <span itemprop="version">Version 11, Release 6.1</span>
+
+<span itemprop="description">
+X11R6.1 was an update to the sixth release of the X Window System, Version 11.
+</span>
+It was released in
+<span itemprop="datePublished" content="1996-03-05">March 1996</span>,
+with the following changes excerpted from the <a href="http://www.x.org/releases/X11R6.1/RELNOTES.TXT" itemprop="releaseNotes">release notes</a>.
+The sources are available for download for historical reference from
+<a href="http://www.x.org/releases/X11R6.1/" itemprop="downloadUrl">http://www.x.org/releases/X11R6.1/</a>.
+
+[[!toc levels=4 startlevel=2]]
+
+## What Is Release 6.1
+
+This is the [[X Consortium|XConsortium]] implementation of the X Window System.  X is a
+vendor-neutral, system-architecture neutral network-transparent window
+system and user interface standard.  X runs on a wide range of computing
+and graphics machines.  For an overview of X, see the X manual page.
+
+R6.1 is an update to R6.  It is compatible with R6 at the source and
+protocol levels in all respects, and binaries are upward-compatible.
+
+###  Extensions supported
+
+The core distribution includes the following extensions: BIG-REQUESTS,
+DOUBLE-BUFFER, MIT-SHM, MIT-SUNDRY-NONSTANDARD, Multi-Buffering, RECORD, SHAPE,
+SYNC, X3D-PEX, XC-MISC, XFree86-VidModeExtension, XIE, XInputExtension,
+XKEYBOARD, XTEST, and XTestExtension1.
+
+Not all of these extensions are standards; see the XStandards manual
+page.
+
+##  What is Unchanged in Release 6.1
+
+
+As this is an update release, there is a great deal of stability in the
+standards, libraries, and clients.  No existing standards have changed in a
+material way, though several documents have been updated with editorial
+improvements.  Most of the libraries have no new interfaces.
+
+
+
+##  What Is New in Release 6.1
+
+
+This section describes changes in the X Consortium distribution since
+[[Release 6|X11R6]].
+
+All libraries, protocols, and servers are compatible with Release 6.
+That is, R6 clients and applications will work with R6.1 libraries and
+servers and vice versa.
+
+The major new functionality in R6.1 is the X Keyboard extension, double
+buffering for smooth animation, and protocol recording.
+
+
+###  New Standards
+
+
+The following are new X Consortium standards in Release 6.1.  Each is
+described in its own section below.
+
+ * XKEYBOARD (XKB)
+ * RECORD
+ * DOUBLE-BUFFER (DBE)
+ * ICE X Rendevous
+
+
+
+###  DBE
+
+
+The Double Buffer Extension (DBE) provides a standard way to utilize
+double-buffering, allowing flicker-free animation.
+
+The older Multi-Buffering extension is not linked in to the X server by
+default.  It will move to unsupported status at the next release.
+
+
+###  XKB
+
+
+An early version of the X Keyboard extension (XKB) was shipped as a work
+in progress in R6.  In R6.1 it is now complete.
+
+XKB provides detailed keyboard descriptions and enhanced keyboard functionality,
+including support for the ISO 9995 keyboard model.
+
+With XKB are several new core clients, xkbcomp, xkbevd, xkbprint, each
+in their own directory under xc/programs, and xkbbell, xkbvleds, and
+xkbwatch, in xc/programs/xkbutils.
+
+
+###  RECORD
+
+
+An early version of the RECORD extension was shipped as a work in
+progress in R6.  It is now complete.
+
+RECORD is an X protocol extension that supports the recording of all
+core X protocol and arbitrary X extension protocol.
+
+###  VidMode
+
+This extension allows interactively adjusting graphics frame buffer parameters
+on PC-based (primarily Intel) hardware.  It is not a Consortium standard.
+
+
+###  ICE X Rendezvous
+
+
+The Inter-Client Exchange protocol (ICE), which became a standard in
+X11R6, specifies a generic communication framework for data exchange
+between arbitrary clients.  The ICE protocol itself does not specify the
+manner in which two clients interested in communicating via ICE are made
+aware of each other's existence.
+
+The ICE X Rendezvous protocol is one standard protocol by which two
+clients who have connections to a common X server can rendezvous.  This
+new protocol is included in the ICE Protocol Specification document.
+
+###  Internationalization
+
+
+Clarifications have been made to several sections of Chapter 13 of the
+Xlib specification.  No changes to the Xlib standard are involved.
+
+
+###  Header Files
+
+
+xc/include/Xalloca.h is solely responsible for defining ALLOCATE_LOCAL
+and DEALLOCATE_LOCAL.  You should be able to add or update a platform's
+support for alloca() by editing this one file instead of finding and
+changing the multiple definitions that existed previously.
+
+xc/include/Xpoll.h allows more portable, consistent select() and poll()
+use in the clients, including getting the fd_set properly defined.  (The
+servers still use select on all systems, even those that have poll.)
+
+
+###  X Server
+
+
+
+####  Device Support
+
+
+The following ddxen have been removed: macII, omron, and svga.
+
+The XFree86 ddx has been updated to 3.1.2C.
+
+The IBM ddx has been updated to work on AIX 4 as well as AIX 3.2.
+
+There is a new HP ddx with support for a new graphics card, the HCRX
+(HyperCRX, HPA4071A_Z), available in 8-bit or 24-bit deep options.  The
+24-bit version has a optional hardware accelerator, in which case it's
+known as an HCRX24Z.  This ddx was distributed in R6 public patch 9.
+
+The Xnest ddx now works on 64-bit machines.
+
+The DEC ddx now works on an Alpha with a simple framebuffer (PMAG-B).
+
+
+####  Internal Changes
+
+
+To support DBE idioms, the new functions PeekNextRequest and
+SkipRequests add the ability to do request lookahead and skipping.  See
+xc/programs/server/os/io.c, xc/programs/server/include/os.h, and
+xc/doc/specs/Xserver/ddx.tbl.ms.
+
+The pixelization of zero-width lines is now tunable so that you can make the
+server match what your hardware does.  See xc/programs/Xserver/mi/miline.h.
+As a result of this work, clipping and pixelization of zero-width lines are now
+consistent across cfb, mfb, and mi.
+
+Several new callback lists were introduced to support the RECORD extension:
+DeviceEventCallback, ReplyCallback, SkippedRequestsCallback, and
+FlushCallback.  The parameters of the ClientStateCallback changed:
+instead of passing a pointer to the client as the call_data, a pointer
+to a small structure containing a pointer to the client and pointers to
+the connection setup information is passed.
+
+
+###  New Programs
+
+
+There are new core programs xkbcomp, xkbevd, xkbprint, xkbbell, xkbvleds, and
+xkbwatch.
+
+
+###  xmh
+
+
+The xmh mail reader is now session aware.  This enhancement was distributed in
+R6 public patch 8.
+
+
+###  xsm
+
+
+The xsm session manager has many enhancements.  It has been moved out of
+xc/workInProgress into xc/programs.  Most of the enhancements were distributed
+in R6 public patch 8.  Advanced signal handling in xsm is appearing for the
+first time in R6.1.
+
+
+###  xterm
+
+
+The xterm terminal emulator has been minimally internationalized to use
+the Xlib built-in input method with 8-bit character sets.
+
+
+###  Fonts
+
+
+Digital has contributed numerous fixes the the bitmap fonts.  These were
+distributed with R6 public patch 10.
+
+
+###  ANSIfication
+
+
+As noted previously under "Configuration Files", for pragmatic reasons
+we changed the way we use __STDC__ to test for standard C compilers.
+This is only a short-term issue, as R6.1 will be the last release that
+will support traditional K&R C.  Future releases will assume a standard
+C compiler and environment.
+
+
+###  Software No Longer Included
+
+
+The software described in this section has been removed from the core
+distribution in R6.1.
+
+
+####  MTXserver
+
+
+The multi-threaded X server snapshot is no longer shipped.  It was in
+xc/workInProgress in R6.  No further development has occurred.  Considerable
+would work have been necessary to get the MTXserver sources back into a state
+where they could be compiled.
+
+
+####  LBX
+
+
+Low Bandwidth X, shipped in preliminary form in xc/workInProgress in R6, has
+been removed from the distribution pending completion of the protocol design
+and sample implementation.  It will reappear in a future release.
+
+
+####  Fresco
+
+
+Fresco, shipped in xc/workInProgress in R6, is now independently dis-
+tributed.  Source and documentation are available from
+<http://www.faslab.com/fresco/HomePage.html>.
+
+
+
+##  Acknowledgements
+
+
+Release 6.1 of X Version 11 is brought to you by the X staff at X Consortium,
+Inc: Donna Converse, Stephen Gildea, Kaleb Keithley, Matt Landau, Ralph Mor, 
+Bob Scheifler, Ralph Swick, Ray Tice, Mark Welch, and Dave Wiggins.
+
+Many companies and individuals have cooperated and worked extremely hard to make
+this release a reality, and our thanks go out to them.  You will find many of
+them listed in the acknowledgements in the individual specifications.
+
+Contributions were received from
+
+Mike Patnode and SCO.
+
+XKB: Erik Fortune (SGI) was the architect and major implementor.  Help
+was received from Will Walker (Digital).  Funding for some of this work
+was provided by IBM.  The library spec was written by Gary Atkins and
+Amber Benson.  The XFree86 Team used early versions and provided useful
+feedback and bug reports.
+
+DBE: T. Alex Chen (IBM), Peter Daifuku (SGI), Ian Elliott (HP), Jim Graham
+(Sun), Larry Hare (AGE), Jay Hersh (X Consortium), Daryl Huff (Sun), Deron Dann
+Johnson (Sun), Louis Khouw (Sun), Mark Kilgard (SGI), Allen Leinwand (SGI).  Rob
+Lembree (Digital), Alan Ricker (Metheus), Michael Rosenblum (Digital), Larry
+Seiler (Digital), Jeanne Sparlin (IBM), Jeff Stevenson (HP), Walter Strand
+(Metheus), Ken Tidwell (HP), Tom Yip (HP).
+
+RECORD: Rob Chesler (Absol-puter), Amnon Cohen (Mercury Interactive),
+Kieron Drake (UniSoft), Marc Evans (Synergytics) Jim Fulton (NCD), Jim
+Haggerty (Metheus) Ken Miller (Digital), Alan Ricker (Metheus), Kent
+Siefkes (Performance Awareness), and Martha Zimet (NCD).
+
+ddxen: HP, IBM, Digital, XFree86 Team.
+
+fonts: Digital
+
+Hidetoshi Tajima (Sun) tested the new internationalization code, providing
+useful bug reports and fixes.
+
+ICE X Rendevous: Will Walker (Digital), Keith Edwards (Georgia Institute
+of Technology).
+
+<div style="font-size: small; border-top: 1px solid black;">
+<p>
+Copyright &copy; <span itemprop="copyrightYear">1996</span>
+<span itemprop="copyrightHolder"
+ itemscope itemtype="http://www.schema.org/Organization">
+<span itemprop="name">X Consortium</span>
+</span>.
+</p><p>
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+“Software”, to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+</p>
+<p>
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+</p>
+<p>
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+</p>
+<p>
+Except as contained in this notice, the name of the X Consortium shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the X Consortium.
+</p>
+<p>
+<i>X Window System</i> is a trademark of X Consortium, Inc.
+</p>
+</div>
+</div>