                           Release Notes for X11R7.2

                     Abstract
                     These release notes contains
                     information about features and their
                     status in the X.Org Foundation
                     X11R7.2 release.

            -------------------------------------------------------

   Table of Contents

   [1]Introduction to the X11R7.2 Release

   [2]Summary of new features in X11R7.2

   [3]Drivers

   [4]Overview of X11R7.2

   [5]Miscellaneous

   [6]Deprecated components and removal plans

   [7]Attributions/Acknowledgements/Credits

Introduction to the X11R7.2 Release

   This release is the third modular release of the X Window System. The next
   official release will be X11R7.3 and is expected in mid 2007.

   For help with how to build and develop in the modular tree see [8]Modular
   Developer's Guide.

   We encourage you to submit bug fixes and enhancements to freedesktop.org's
   [9]bug tracking system using the xorg product, and to discuss them on
   <[10]xorg@lists.freedesktop.org>.

   The release numbering is based on the original MIT X numbering system. X11
   refers to the version of the network protocol that the X Window system is
   based on: Version 11 was first released in 1988 and has been stable for 18
   years, with only upward compatible additions to the core X protocol, a
   record of stability envied in computing. Formal releases of X started with
   X version 9 from MIT; the first commercial X products were based on X
   version 10. The MIT X Consortium and its successors, the X Consortium, the
   Open Group X Project Team, and the X.Org Group released versions X11R3
   through X11R6.6. Since the founding of the X.Org Foundation in early 2004,
   five further major releases have been issued, from 6.7 to the current 7.2.

   The next section describes what is new in the latest version (7.2)
   compared with the previous full release (7.1).

   --------------------------------------------------------------------------

Summary of new features in X11R7.2

   This is a sampling of the new features in X11R7.2. A more complete list of
   changes can be found in the ChangeLog files that are part of the X source
   tree.

     * The X Access Control Extension (XACE) has been added to this release.
       XACE is a set of generic "hooks" that can be used by other X
       extensions to perform access checks. This provides integration of the
       X server with the SELinux and xtsol platform-specific security
       frameworks.

     * The X server now incorporates significantly improved autodetection
       when running without an xorg.conf file. This will help to limit the
       number of users who have to fuss with their X configuration to get a
       working server setup.

     * XCB now provides a new implementation of libX11. The XCB library is a
       ground-up rewrite of the venerable libX11. It features a small
       footprint, latency hiding, direct access to the protocol, improved
       threading support, and extensibility. In addition to providing a new
       programming interface, it also provides a libX11 compatibility layer
       to allow it to be used transparently in place of libX11.

     * OS support enhancements for Linux, Solaris, and most of the *BSD
       family

     * Platform support enhancements for x86, amd64, sparc64, and ia64

     * ... and the usual assortment of correctness and crash fixes.

   --------------------------------------------------------------------------

  Updated keyboard mappings

   The requirement for XKB data can be satisfied by the dataset from the
   xkeyboard-config project (the 'xkbdesc' module). xkbdesc has numerous
   improvements relative to the deprecated xkbdata: layouts have been cleaned
   up for consistency and universal multi-layout support, some new layouts
   have added, and some layouts have changed names to be more straightforward
   and ISO compliant. Some setups will need adjustments in order to use
   xkbdesc. It is now strongly encouraged for all distributions to migrate to
   xkbdesc, as the old formats are deprecated and are not considered a part
   of the X11R7.2 release.

   --------------------------------------------------------------------------

  Video driver enhancements

   Please see the ChangeLog files for individual drivers; there are far too
   many updates to list here.

   --------------------------------------------------------------------------

Drivers

  Video Drivers

   X11R7.2 includes the following video drivers:

   +------------------------------------------------------------------------+
   | Driver Name   | Description          | Further Information             |
   |---------------+----------------------+---------------------------------|
   | apm           | Alliance Pro Motion  | [11]README.apm                  |
   |---------------+----------------------+---------------------------------|
   | ark           | Ark Logic            | *                               |
   |---------------+----------------------+---------------------------------|
   | ast           | ASPEED Technology    | *                               |
   |---------------+----------------------+---------------------------------|
   |               |                      | [12]README.ati,                 |
   | ati           | ATI                  | [13]README.r128, [14]r128(4),   |
   |               |                      | [15]radeon(4)                   |
   |---------------+----------------------+---------------------------------|
   | chips         | Chips & Technologies | [16]README.chips, [17]chips(4)  |
   |---------------+----------------------+---------------------------------|
   | cirrus        | Cirrus Logic         | *                               |
   |---------------+----------------------+---------------------------------|
   | cyrix (*)     | Cyrix MediaGX        | [18]README.cyrix                |
   |---------------+----------------------+---------------------------------|
   | fbdev         | Linux framebuffer    | [19]fbdev(4)                    |
   |               | device               |                                 |
   |---------------+----------------------+---------------------------------|
   | glint         | 3Dlabs, TI           | [20]glint(4)                    |
   |---------------+----------------------+---------------------------------|
   | i128          | Number Nine          | [21]README.I128, [22]i128(4)    |
   |---------------+----------------------+---------------------------------|
   | i740          | Intel i740           | [23]README.i740                 |
   |---------------+----------------------+---------------------------------|
   | i810          | Intel i8xx           | [24]README.i810, [25]i810(4)    |
   |---------------+----------------------+---------------------------------|
   | impact        | SGI Indigo Impact    | [26]impact(4)                   |
   |---------------+----------------------+---------------------------------|
   | imstt         | Integrated Micro     | *                               |
   |               | Solns                |                                 |
   |---------------+----------------------+---------------------------------|
   | mga           | Matrox               | [27]mga(4)                      |
   |---------------+----------------------+---------------------------------|
   | neomagic      | NeoMagic             | [28]neomagic(4)                 |
   |---------------+----------------------+---------------------------------|
   | newport (-)   | SGI Newport          | [29]README.newport,             |
   |               |                      | [30]newport(4)                  |
   |---------------+----------------------+---------------------------------|
   | nsc           | National             | [31]nsc(4)                      |
   |               | Semiconductor        |                                 |
   |---------------+----------------------+---------------------------------|
   | nv            | NVIDIA               | [32]nv(4)                       |
   |---------------+----------------------+---------------------------------|
   | rendition     | Rendition            | [33]README.rendition,           |
   |               |                      | [34]rendition(4)                |
   |---------------+----------------------+---------------------------------|
   | s3            | S3 (not ViRGE or     | *                               |
   |               | Savage)              |                                 |
   |---------------+----------------------+---------------------------------|
   | s3virge       | S3 ViRGE             | [35]README.s3virge,             |
   |               |                      | [36]s3virge(4)                  |
   |---------------+----------------------+---------------------------------|
   | savage        | S3 Savage            | [37]savage(4)                   |
   |---------------+----------------------+---------------------------------|
   | siliconmotion | Silicon Motion       | [38]siliconmotion(4)            |
   |---------------+----------------------+---------------------------------|
   | sis           | SiS                  | [39]README.SiS, [40]sis(4)      |
   |---------------+----------------------+---------------------------------|
   | sisusb        | SiS USB              | [41]sisusb(4)                   |
   |---------------+----------------------+---------------------------------|
   | sunbw2 (+)    | Sun bw2              | *                               |
   |---------------+----------------------+---------------------------------|
   | suncg14 (+)   | Sun cg14             | *                               |
   |---------------+----------------------+---------------------------------|
   | suncg3 (+)    | Sun cg3              | *                               |
   |---------------+----------------------+---------------------------------|
   | suncg6 (+)    | Sun GX and Turbo GX  | *                               |
   |---------------+----------------------+---------------------------------|
   | sunffb (+)    | Sun Creator/3D,      | *                               |
   |               | Elite 3D             |                                 |
   |---------------+----------------------+---------------------------------|
   | sunleo (+)    | Sun Leo (ZX)         | *                               |
   |---------------+----------------------+---------------------------------|
   | suntcx (+)    | Sun TCX              | *                               |
   |---------------+----------------------+---------------------------------|
   | tdfx          | 3Dfx                 | [42]tdfx(4)                     |
   |---------------+----------------------+---------------------------------|
   | tga           | DEC TGA              | [43]README.DECtga               |
   |---------------+----------------------+---------------------------------|
   | trident       | Trident              | [44]trident(4)                  |
   |---------------+----------------------+---------------------------------|
   | tseng         | Tseng Labs           | *                               |
   |---------------+----------------------+---------------------------------|
   | v4l           | Video4Linux          | *                               |
   |---------------+----------------------+---------------------------------|
   | vesa          | VESA                 | [45]vesa(4)                     |
   |---------------+----------------------+---------------------------------|
   | vga           | Generic VGA          | [46]vga(4)                      |
   |---------------+----------------------+---------------------------------|
   | via           | VIA                  | [47]via(4)                      |
   |---------------+----------------------+---------------------------------|
   | vmware        | VMware guest OS      | [48]vmware(4)                   |
   |---------------+----------------------+---------------------------------|
   | voodoo        | 3Dfx Voodoo          | [49]vmware(4)                   |
   |---------------+----------------------+---------------------------------|
   | wfb           | Wrapper Framebuffer  | [50]vmware(4)                   |
   +------------------------------------------------------------------------+

   Drivers marked with (*) are present in a preliminary form in this release,
   but are not complete and/or stable yet.

   Drivers marked with (+) are for Linux/Sparc only.

   Drivers marked with (-) are for Linux/mips only.

   Darwin/Mac OS X uses IOKit drivers and does not use the module loader
   drivers listed above. Further information can be found in
   [51]README.Darwin.

   --------------------------------------------------------------------------

  Input Drivers

   X11R7.2 includes the following input drivers:



   +----------------------------------------------------------------------+
   | Driver Name | Description                      | Further Information |
   |-------------+----------------------------------+---------------------|
   | acecad      | Acecad Flair                     | [52]acecad(4)       |
   |-------------+----------------------------------+---------------------|
   | aiptek(*)   | Aiptek USB tablet                | [53]aiptek(4)       |
   |-------------+----------------------------------+---------------------|
   | calcomp     | Calcomp                          | *                   |
   |-------------+----------------------------------+---------------------|
   | citron      | Citron                           | [54]citron(4)       |
   |-------------+----------------------------------+---------------------|
   | digitaledge | DigitalEdge                      | *                   |
   |-------------+----------------------------------+---------------------|
   | dmc         | DMC                              | [55]dmc(4)          |
   |-------------+----------------------------------+---------------------|
   | dynapro     | Dynapro                          | *                   |
   |-------------+----------------------------------+---------------------|
   | elo2300     | EloGraphics 2300                 | *                   |
   |-------------+----------------------------------+---------------------|
   | elographics | EloGraphics                      | *                   |
   |-------------+----------------------------------+---------------------|
   | evdev(*)    | EvDev                            | [56]evdev(4)        |
   |-------------+----------------------------------+---------------------|
   | fpit        | Fujitsu Stylistic Tablet PCs     | [57]fpit(4)         |
   |-------------+----------------------------------+---------------------|
   | hyperpen    | Aiptek HyperPen 6000             | *                   |
   |-------------+----------------------------------+---------------------|
   | js_x        | JamStudio pentablet              | [58]js_x(4)         |
   |-------------+----------------------------------+---------------------|
   | kbd         | generic keyboards (alternate)    | [59]kbd(4)          |
   |-------------+----------------------------------+---------------------|
   | keyboard    | generic keyboards                | [60]keyboard(4)     |
   |-------------+----------------------------------+---------------------|
   | magellan    | Magellan                         | *                   |
   |-------------+----------------------------------+---------------------|
   | microtouch  | MicroTouch                       | *                   |
   |-------------+----------------------------------+---------------------|
   | mouse       | most mouse devices               | [61]mouse(4)        |
   |-------------+----------------------------------+---------------------|
   | mutouch     | MicroTouch                       | *                   |
   |-------------+----------------------------------+---------------------|
   | palmax      | Palmax PD1000/PD1100             | [62]palmax(4)       |
   |-------------+----------------------------------+---------------------|
   | penmount    | PenMount                         | *                   |
   |-------------+----------------------------------+---------------------|
   | spaceorb    | SpaceOrb                         | *                   |
   |-------------+----------------------------------+---------------------|
   | summa       | SummaGraphics                    | *                   |
   |-------------+----------------------------------+---------------------|
   | tek4957     | Tektronix 4957 tablet            | [63]tek4957(4)      |
   |-------------+----------------------------------+---------------------|
   | ur98(*)     | Union Reality UR-F98 headtracker | [64]ur98(4)         |
   |-------------+----------------------------------+---------------------|
   | void        | dummy device                     | [65]void(4)         |
   +----------------------------------------------------------------------+

   Drivers marked with (*) are available for Linux only.

   --------------------------------------------------------------------------

Overview of X11R7.2

   On most platforms, X11R7.2 has a single X server binary called Xorg. This
   binary can either have one or more video and input drivers linked in
   statically, or more usually, dynamically, and in that manner load the
   video drivers, input drivers, and other modules that are needed.

   X11R7.2 has currently has support for Linux, Solaris, and some BSD OSs on
   Alpha, PowerPC, IA-64, AMD64, Intel x86, Sparc, and MIPS platforms.

   --------------------------------------------------------------------------

  Loader and Modules

   The X server relies on the operating system's native module loader support
   for handling program modules. The X server makes use of modules for video
   drivers, X server extensions, font rasterisers, input device drivers,
   framebuffer layers, and internal components used by some drivers (like
   XAA),

   The module interfaces (both API and ABI) used in this release are subject
   to change without notice. While we will attempt to provide backward
   compatibility for the module interfaces, we cannot guarantee this.
   Compatibility in the other direction is explicitly not guaranteed because
   new modules may rely on interfaces added in new releases.

   Note about module security "The X server runs with root privileges, i.e.,
   the X server loadable modules also run with these privileges. For this
   reason we recommend that all users be careful to only use loadable modules
   from reliable sources, otherwise the introduction of viruses and
   contaminated code can occur and wreak havoc on your system. We hope to
   have a mechanism for signing/verifying the modules that we provide
   available in a future release."

   --------------------------------------------------------------------------

  Configuration File

   The X server uses a configuration file as the primary mechanism for
   providing configuration and run-time parameters. The configuration file
   format is described in detail in the [66]xorg.conf(5) manual page.

   The recommended method for generating a configuration file is to use the
   Xorg server itself. Run as root:

           Xorg -configure


   and follow the instructions.

   This release comes with a graphical configuration tool called "xorgcfg",
   which also has a text mode interface and can be used to create an initial
   configuration file. It can also be used to customize existing
   configurations. This tool is deprecated, although it is still available
   for use.

   Finally, if all else fails, the old standby text-based tool "xorgconfig"
   can also be used for generating X server config files.

   At least one, and hopefully, all of these configuration options will give
   you a reasonable starting point for a suitable configuration file. With
   the automatic mechanism you might even find that you don't need one! Note
   that this release features significant improvements for running the server
   without a configuration file, so many users may find that that they don't
   need a configuration file.

   If you do need to customize the configuration file, see the [67]xorg.conf
   manual page . You can also check the driver-specific manual pages and the
   related documentation (found at [68]driver tables also.

   --------------------------------------------------------------------------

  Command Line Options

   Command line options can be used to override some default parameters and
   parameters provided in the configuration file. These command line options
   are described in the [69]Xorg(1) manual page.

   --------------------------------------------------------------------------

  XAA

   The XFree86 Acceleration Architecture (XAA) was completely rewritten from
   scratch for XFree86 4.x and is used in X11R7.2. Most drivers implement
   acceleration by making use of the XAA module.

   --------------------------------------------------------------------------

  EXA

   EXA was created as a new driver acceleration architecture to replace XAA.
   EXA was designed specifically to accelerate Render operations. This
   release features improved driver support for EXA. See the individual
   driver changelogs for details. Users should beware that EXA support is
   considered to be incomplete in X11R7.2.

   --------------------------------------------------------------------------

  Multi-head

   Some multi-head configurations are supported in X11R7.2, primarily with
   multiple PCI/AGP cards.

   One of the main problems is with drivers not sufficiently initializing
   cards that were not initialized at boot time. This has been improved
   somewhat with the INT10 support that is used by most drivers (which allows
   secondary card to be "soft-booted", but in some cases there are other
   issues that still need to be resolved. Some combinations can be made to
   work better by changing which card is the primary card (either by using a
   different PCI slot, or by changing the system BIOS's preference for the
   primary card).

   --------------------------------------------------------------------------

  Xinerama

   Xinerama is an X server extension that allows multiple physical screens to
   behave as a single screen. With traditional multi-head in X11, windows
   cannot span or cross physical screens. Xinerama removes this limitation.
   Xinerama does, however, require that the physical screens all have the
   same root depth, so it isn't possible, for example, to use an 8-bit screen
   together with a 16-bit screen in Xinerama mode.

   Xinerama is not enabled by default, and can be enabled with the +xinerama
   command line option for the X server.

   Known problems:

     * Most window managers are not Xinerama-aware, and so some operations
       like window placement and resizing might not behave in an ideal way.
       This is an issue that needs to be dealt with in the individual window
       managers, and isn't specifically an X server problem.

   --------------------------------------------------------------------------

  DGA version 2

   DGA 2.0 is included in 7.2. Documentation for the client libraries can be
   found in the [70]XDGA(3) man page. A good degree of backward compatibility
   with version 1.0 is provided. DGA should be considered deprecated; if you
   are relying on it, please let us know what you need it for so we can find
   better solutions.

   --------------------------------------------------------------------------

  DDC

   The VESA* Display Data Channel (DDC(TM)) standard allows the monitor to
   tell the video card (or on some cases the computer directly) about itself;
   particularly the supported screen resolutions and refresh rates.

   Partial or complete DDC support is available in most of the video drivers.
   DDC is enabled by default, but can be disabled with a "Device" section
   entry: Option "NoDDC". We have support for DDC versions 1 and 2; these can
   be disabled independently with Option "NoDDC1" and Option "NoDDC2".

   At startup the server prints out DDC information from the display, and can
   use this information to set the default monitor parameters, or to warn
   about monitor sync limits if those provided in the configuration file
   don't match those that are detected.

   --------------------------------------------------------------------------

    Changed behavior caused by DDC.

   Several drivers uses DDC information to set the screen size and pitch.
   This can be overridden by explicitly resetting it to the and non-DDC
   default value 75 with the -dpi 75 command line option for the X server, or
   by specifying appropriate screen dimensions with the "DisplaySize" keyword
   in the "Monitor" section of the config file.

   --------------------------------------------------------------------------

  GLX and the Direct Rendering Infrastructure (DRI)

   Direct rendered OpenGL* support is provided for several hardware platforms
   by the Direct Rendering Infrastructure (DRI). Further information about
   DRI can be found at the [71]DRI Project's web site. The 3D core rendering
   component is provided by [72]Mesa.

   Of note is that this release supports building the X server using the
   system-wide libdrm. Previously, drm was kept in the server's tree and
   loaded as a module, rather than using the standard OS mechanisms for
   managing shared libraries of code. This requires that the server be built
   using a version of libdrm of 2.3.0 or newer if it is to use DRM.

   --------------------------------------------------------------------------

  XVideo Extension (Xv)

   The XVideo extension is supported in X11R7.2.

   --------------------------------------------------------------------------

  X Rendering Extension (Render)

   The X Rendering extension provides a 2D rendering model that more closely
   matches application demands and hardware capabilities. It provides a
   rendering model derived from Plan 9 based on Porter/Duff image composition
   rather than binary raster operations.

   Using simple compositing operators provided by most hardware, Render can
   draw anti-aliased text and geometric objects as well as perform
   translucent image overlays and other image operations not possible with
   the core X rendering system.

   Unlike the core protocol, Render provides no font support for
   applications, rather it allows applications to upload glyphs for display
   on the screen. This allows the client greater control over text rendering
   and complete access to the available font information while still
   providing hardware acceleration. The Xft library provides font access for
   Render applications.

   --------------------------------------------------------------------------

    The Xft Library

   On the client side, the Xft library provides access to fonts for
   applications using the FreeType library, version 2. One important thing to
   note is that Xft uses the vertical size of the monitor to compute accurate
   pixel sizes for provided point sizes; if your monitor doesn't provide
   accurate information via DDC, you may want to add that information to
   xorg.conf.

   To allow a graceful transition for applications moving from core text
   rendering to the Render extension, Xft can use either the core rendering
   requests or the Render extension for text. See the section on FreeType
   support in Xft for instructions on configuring X11R7.2 to use an existing
   FreeType installation.

   The Xft library uses configuration files, /etc/fonts/fonts.conf and
   /etc/fonts/local.conf, which contains information about which directories
   contain font files and also provides a sophisticated font aliasing
   mechanism. Documentation for that file is included in the [73]Xft(3) man
   page.

   --------------------------------------------------------------------------

    Application Support For Anti-Aliased Text

   Only four applications have been modified in X11R7.2 to work with the
   Render extension and the Xft and FreeType libraries to provide
   anti-aliased text: xterm, xditview, x11perf and xclock. Migration of other
   applications may occur in future releases.

   By default, xterm uses core fonts through the standard core API. It has a
   command line option and associated resource to direct it to use Xft
   instead:

     * -fa family / .VT100.faceName: family. Selects the font family to use.

   Xditview will use Xft instead of the core API by default. X11perf includes
   tests to measure the performance of text rendered in three ways,
   anti-aliased, anti-aliased with sub-pixel sampling and regular chunky
   text, but through the Render extension, a path which is currently somewhat
   slower than core text.

   Xclock uses the Render extension to draw the analog face and shares the
   -fa option and faceName resources with xterm to select a font for the
   digital mode.

   --------------------------------------------------------------------------

  Font support

   Details about the font support in X11R7.2.x can be found in the
   [74]README.fonts document.

   --------------------------------------------------------------------------

  TrueType support

   X11R6.7 came with two TrueType backends. The functionality from the
   `X-TrueType' backend has been integrated into the `FreeType' backend which
   is designed to transparently support all of the functionality from the
   `X-TrueType' backend with the exception of the font encoding libraries;
   the `FreeType' backend uses only the fontenc-based encoding system.

   --------------------------------------------------------------------------

  Internationalisation of the scalable font backends

   X11R7.2 has a ``fontenc'' layer to allow the scalable font backends to use
   a common method of font re-encoding. This re-encoding makes it possible to
   uses fonts in encodings other than their their native encoding. This layer
   is used by the Type1 and FreeType backends.

   --------------------------------------------------------------------------

  Large font optimization

   The glyph metrics array, which all the X clients using a particular font
   have access to, is placed in shared memory, so as to reduce redundant
   memory consumption. For non-local clients, the glyph metrics array is
   transmitted in a compressed format.

   --------------------------------------------------------------------------

  Unicode/ISO 10646 support

   What is included in X11R7.2

     * All ``-misc-fixed-*'' BDF fonts are now available in the ISO10646-1
       encoding and cover at least the 614 characters found in ISO
       8859-{1-5,7-10,14,15}, CP1252, and MES-1. The non-bold fonts also
       cover all Windows Glyph List 4 (WGL4) characters, including those
       found in all 8-bit MS-DOS/Windows code pages. The 8-bit variants of
       the ``-misc-fixed-*'' BDF fonts (ISO8859-1, ISO8859-2, KOI8-R, etc.)
       have all been automatically generated from the new ISO10646-1 master
       fonts.

     * Some ``-misc-fixed-*'' BDF ISO10646-1 fonts now cover a comprehensive
       Unicode repertoire of over 3000 characters including all Latin, Greek,
       Cyrillic, Armenian, Gregorian, Hebrew, IPA, and APL characters, plus
       numerous scientific, typographic, technical, and
       backward-compatibility symbols. Some of these fonts also cover Arabic,
       Ethiopian, Thai, Han/Kanji, Hangul, full ISO 8859, and more. For the
       6x13 font there is now a 12x13ja Kanji extension and for the 9x18 font
       there is a 18x18ja Kanji/Han/Hangul extension, which covers all
       ISO-2022-JP-2 (RFC 1554) characters. The 9x18 font can also be used to
       implement simple combining characters by accent overstriking. For more
       information, read Markus Kuhn's [75]UTF-8 and Unicode FAQ.

     * Mark Leisher's ClearlyU proportional font (similar to Computer
       Modern).

     * ISO 10646/Unicode UTF-8 Level 1 support added to xterm (enabled with
       the -u8 option).

     * The Freetype backend (the "freetype" module) supports Unicode-encoded
       fonts.

   --------------------------------------------------------------------------

  Xlib Compose file support and extensions

   A more flexible Compose file processing system was added to Xlib in
   X11R7.2. The compose file is searched for in the following order:

    1. If the environment variable $XCOMPOSEFILE is set, its value is used as
       the name of the Compose file.

    2. If the user's home directory has a file named ".XCompose", it is used
       as the Compose file.

    3. The old method is used, and the compose file is
       "<xlocaledir>/<localename>/Compose".

   Compose files can now use an "include" instruction. This allows local
   modifications to be made to existing compose files without including all
   of the content directly. For example, the system's iso8859-1 compose file
   can be included with a line like this:

           include "/usr/X11R6/lib/X11/locale/iso8859-1/Compose"


   There are two substitutions that can be made in the file name of the
   include instruction. %H expands to the user's home directory (the $HOME
   environment variable), and %L expands to the name of the locale specific
   Compose file (i.e., "<xlocaledir>/<localename>/Compose").

   For example, you can include in your compose file the default Compose file
   by using:

           include "%L"


   and then rewrite only the few rules that you need to change. New compose
   rules can be added, and previous ones replaced.

   Finally, it is no longer necessary to specify in the right part of a rule
   a locale encoded string in addition to the keysym name. If the string is
   omitted, Xlib figures it out from the keysym according to the current
   locale. I.e., if a rule looks like:

           <dead_grave> <A> : "\300" Agrave


   the result of the composition is always the letter with the "\300" code.
   But if the rule is:

           <dead_grave> <A> : Agrave


   the result depends on how Agrave is mapped in the current locale.

   --------------------------------------------------------------------------

  Bitstream Vera fonts

   X11R7.1 includes the Bitstream Vera family of typefaces in TrueType
   format. This family includes the ``Bitstream Vera Sans'', ``Bitstream Vera
   Sans Mono'' and ``Bitstream Vera Serif'' in Roman and Bold variants as
   well as the ``Bitstream Vera Sans'' and ``Bitstream Vera Sans Mono'' in
   Oblique and Bold Oblique. These fonts include all of the glyphs needed for
   ISO* 8859 parts 1 9 and 15.

   The license terms for the Vera fonts are included in the file
   COPYRIGHT.Vera.

   --------------------------------------------------------------------------

  Luxi fonts from Bigelow and Holmes

   The X distribution includes the ``Luxi'' family of Type*1 fonts and
   TrueType fonts. This family consists of the fonts ``Luxi*Serif'',
   ``Luxi*Sans'' and ``Luxi*Mono'' in Roman, oblique, bold and bold oblique
   variants. The TrueType version have glyphs covering the basic ASCII
   Unicode range, the Latin*1 range, as well as the Extended Latin range and
   some additional punctuation characters. In particular, these fonts include
   all the glyphs needed for ISO*8859 parts 1, 2, 3, 4, 9, 13 and 15, as well
   as all the glyphs in the Adobe Standard encoding and the Windows 3.1
   character set.

   The glyph coverage of the Type*1 versions is somewhat reduced, and only
   covers ISO*8859 parts 1, 2 and 15 as well as the Adobe Standard encoding.

   The Luxi fonts are original designs by Kris Holmes and Charles Bigelow
   from Bigelow and Holmes Inc., who developed the Luxi typeface designs in
   Ikarus digital format. URW++ Design and Development GmbH converted the
   Ikarus format fonts to TrueType and Type*1 font programs and implemented
   the grid-fitting "hints" and kerning tables in the Luxi fonts.

   The license terms for the Luxi fonts are included in the file
   `COPYRIGHT.BH', as well as in the [76]License document. For further
   information, please contact <[77]design@bigelowandholmes.com> or
   <[78]info@urwpp.de>, or consult the [79]URW++ web site.

   --------------------------------------------------------------------------

Miscellaneous

   This section describes other items of note for the X11R7.2 release.

   --------------------------------------------------------------------------

  Socket directory ownership and permissions

   The socket directories created in /tmp are now required to be owned by
   root and have their sticky-bit set. If the permissions are not set
   correctly, the component using this directory will print an error message
   and fail to start. Common socket directories that are known to be affected
   include:

           /tmp/.font-unix
           /tmp/.ICE-unix
           /tmp/.X11-unix


   These directories are used by the font server, xfs, applications using the
   Inter-Client Exchange protocol (ICE) and the X server, respectively.

   There are several solutions to the problem of when to create these
   directories. They could be created at install time by the system's
   installer if the /tmp dir is persistent. They could be created at boot
   time by the system's boot scripts (e.g., the init.d scripts). Or, they
   could be created by PAM modules at service startup or user login time.

   The solution chosen is platform dependent, and the system administrator
   should be able to handle creating those directories on any systems that do
   not have the correct ownership or permissions.

   --------------------------------------------------------------------------

  Composite exposes extra visuals

   When the Composite extension is enabled via xorg.conf or the command line,
   a new visual is created. This visual is different from the other visuals
   used by X applications in that it includes an alpha component. It is used
   by the compositing manager and other Composite aware applications.

   Most X applications ignore this visual since it is not useful to them;
   however some applications mistakenly try to use it, which will cause them
   to fail. An environment variable, XLIB_SKIP_ARGB_VISUALS, was added to the
   X11 library to hide this visual from applications that mistakenly try to
   use it. If an application fails only when the Composite is enabled, try
   setting this environment variable before starting the application.

   Since Composite is not enabled by default, it is not expected that this
   issue will be visible to most users.

   --------------------------------------------------------------------------

Deprecated components and removal plans

   This section lists current plans for removal of obsolete or deprecated
   components in the X.Org releases. As our releases are open source, users
   who continue to require these can find the source in previous releases and
   continue to use these, but the X.Org Foundation and its volunteers have
   decided the burden of continued maintenance and distribution in the core
   X11 releases outweighs the benefits of doing so. In some cases, this is
   simply because no one has volunteered to do continued maintenance, so if
   software is listed here that you need, you can contact
   <[80]xorg@lists.freedesktop.org> to volunteer to take over maintainership,
   either inside or outside of the Xorg release process.

   Low-Bandwidth X (LBX)

           The LBX extension is has been removed in this release.

   CID Fonts

           Support for CID fonts has been removed as of this release. mkcfm
           has also been deprecated as a result.

   xkbdata

           The old xkbdata module has been deprecated and is not considered
           to be a part of this release. Please migrate to the data provided
           by the xkeyboard-config project, which located in the xkbdesc CVS
           module.

   --------------------------------------------------------------------------

Attributions/Acknowledgements/Credits

   This section lists the credits for the X11R7.2 release. For a more
   detailed breakdown, refer to the ChangeLog file in the X.Org source tree,
   the ChangeLog's in [81]the xorg product in freedesktop.org's CVS or the
   'cvs log' information for individual source files.

   These people contributed in some way to X11R7.1

           Jonathan Adamczewski, Dave Airlie, Paul Anderson, Eric Anholt,
           Andrei Barbu, Jesse Barnes, Donnie Berkholz, Alan Coopersmith,
           Michel D*nzer, Alex Deucher, Radek Doulik, Egbert Eich, Eduard
           Fuchs, George Fufutos, Alexander Gottwald, Matthieu Herrb, Ben
           Herrenschmidt, Thomas Hellstr*m, Fredrik H*glund, Kristian
           H*gsberg, Matthias Hopf, Zephaniah E. Hull, Alan Hourihane, Valery
           Inozemtsev, Adam Jackson, Deron Johnson, Nicholas Joly, Jaymz
           Julian, Lars Knoll, Egmont Koblinger, Felix K*hling, Philip
           Langdale, Kevin E. Martin, Keith Packard, Drew Parsons, Hong Bo
           Peng, Aaron Plattner, Jeremy C. Reed, David Reveman, Ian Romanick,
           Zack Rusin, S*ren Sandmann, Tilman Sauerbeck, Roland Scheidegger,
           Dag-Erling Sm*rgrav, Daniel Stone, Carl Switzky, Luc Verhaegen,
           Julio M. Merino Vidal, Zhenyu Wang, Alex Williamson, Thomas
           Winischhofer, David Woodhouse,

   The X Window System has been a collaborative effort from its inception.
   Our apologies for anyone or organization inadvertently overlooked. Many
   individuals (including major contributors) who worked on X are represented
   by their employers in this list. If you feel we have left anyone out,
   please let us know.

   This product includes software developed by:

           Paul Anderson, Michael Bax, Jehan Bing, Peter Breitenlohner, Alan
           Coopersmith, Egbert Eich, John Dennis, Fabrizio Gennari, Jim
           Gettys, Alexander Gottwald, Ralf Habacker Mike Harris, Matthieu
           Herrb, Alan Hourihane, Harold L Hunt II, Elliot Lee, Jeremy Katz,
           Kaleb Keithley, Stuart Kreitman, Andreas Luik, Torrey Lyons,
           Roland Mainz, Kevin E. Martin, Takuma Murakami, Kensuke Matsuzaki,
           Keith Packard, Ivan Pascal, Earle F. Philhower III, Benjamin
           Rienfenstahl, Leon Shiman, Toshimitsu Tanaka, Nicholas Wourms.

           2d3d Inc., 3Dlabs Inc. Ltd., Aaron Plattner, Adam de Boor, Adam
           Jackson, Adobe Systems Inc., After X-TT Project, AGE Logic Inc.,
           Alan Coopersmith, Alan Cox, Alan Hourihane, Alexander Gottwald,
           Alex Deucher, Anders Carlsson, Andreas Luik, Andreas Monitzer,
           Andreas Robinson, Andrew C Aitchison, Andy Ritger, Angus Lees, Ani
           Joshi, Anton Zioviev, Apollo Computer Inc., Apple Computer Inc.,
           Ares Software Corp., AT&T Inc., ATI Technologies Inc., BEAM Ltd.,
           Ben Skeggs, Benjamin Herrenschmidt, Benjamin Rienfenstahl, Bigelow
           and Holmes, Bill Reynolds, Bitstream Inc., Bogdan Diaconescu,
           Branden Robinson, Brian Fundakowski Feldman, Brian Goines, Brian
           Paul, Bruno Haible, Bryan Stine, Catharon Productions Inc.,
           Charles Murcko, Chen Xiangyang, Chisato Yamauchi, Chris Constello,
           Christian Zietz, Cognition Corp., Compaq Computer Corporation,
           Concurrent Computer Corporation, Conectiva S.A., Corin Anderson,
           Craig Struble, Daewoo Electronics Co. Ltd., Dale Schumacher,
           Damien Miller, Daniel Berrange, Daniel Borca, Daniel Stone,
           Daniver Limited, Daryll Strauss, Data General Corporation, Dave
           Airlie, David Bateman, David Dawes, David E. Wexelblat, David
           Holland, David J. McKay, David McCullough, David Mosberger-Tang,
           David S. Miller, Davor Matic, Deron Johnson, Digeo Inc., Digital
           Equipment Corporation, Dirk Hohndel, Doug Anson, Dmitry Golubev,
           Earle F. Philhower III, Edouard TISSERANT, Eduardo Horvath, Egbert
           Eich, Elliot Lee, Eric Anholt, Eric Fortune, Eric Sunshine, Erik
           Fortune, Erik Nygren, Evans & Sutherland Computer Corporation,
           Fabio Massimo Di Nitto, Fabrizio Gennari, Felix Kuehling, Finn
           Thoegersen, Francesco Zappa Nardelli, Frank C. Earl, Frederic
           Lepied, Free Software Foundation Inc., Fujitsu Limited, Fujitsu
           Open Systems Solutions Inc., Fuji Xerox Co. Ltd., Geert
           Uytterhoeven, Gerrit Jan Akkerman, Gerry Toll, Glenn G. Lai, GNOME
           Foundation, Go Watanabe, Greg Kroah-Hartman, Greg Parker, Gregory
           Mokhin, GROUPE BULL, Guy Martin, Hans Oey, Harald Koenig, Harm
           Hanemaayer, Harold L Hunt II, Harry Langenbacher, Henry A. Worth,
           Hewlett-Packard Company, Hitachi Ltd, Holger Veit, Howard
           Greenwell, Hummingbird Communications Ltd., IBM Corporation, Intel
           Corporation, INTERACTIVE Systems Corporation, International
           Business Machines Corp., Itai Nahshon, Ivan Kokshaysky, Ivan
           Pascal, Jakub Jelinek, James Tsillas, Jason Bacon, Jean-loup
           Gailly, Jeff Hartmann, Jeff Kirk, Jeffrey Hsu, Jehan Bing, Jeremy
           Katz, Jerome Glisse, Jim Gettys, Jim Tsillas, John Dennis, John
           Harper, John Heasley, Jon Block, Jon Smirl, Jon Tombs, Jorge
           Delgado, Jos** Fonseca, Joseph Friedman, Joseph V. Moss, Juliusz
           Chroboczek, Jyunji Takagi, Kaleb Keithley, Kazushi (Jam) Marukawa,
           Kazuyuki (ikko-) Okamoto, Kean Johnston, Keith Packard, Keith
           Whitwell, Kensuke Matsuzaki, Kristian H*gsberg, Larry Wall,
           Lawrence Berkeley Laboratory, Leif Delgass, Lennart Augustsson,
           Leon Shiman, Lexmark International Inc., Linus Torvalds, Luc
           Verhaegen, Machine Vision Holdings Inc., Manfred Brands, Marc
           Aurele La France Mark Adler, Mark J. Kilgard, Mark Leisher, Mark
           Smulders, Mark Vojkovich, Marvin Solomon, Massachusetts Institute
           Of Technology, Matrox Graphics, Matthew Grossman, Matthieu Herrb,
           Metro Link Inc., Michael Bax, Michael H. Schimek, Michael P.
           Marking, Michael Schimek, Michael Smith, Michel Daenzer, Mike A.
           Harris, Ming Yu, MIPS Computer Systems Inc., National
           Semiconductor, NCR Corporation Inc., Netscape Communications
           Corporation, Network Computing Devices Inc., Nicholas Miell,
           Nicholas Wourms, Nicolai Haehnle, Noah Levitt, Nolan Leake, Novell
           Inc., Nozomi YTOW, NTT Software Corporation, Number Nine Computer
           Corp., Number Nine Visual Technologies, NVIDIA Corp., Oivier
           Danet, Oki Technosystems Laboratory Inc., OMRON Corporation, Open
           Software Foundation, Orest Zborowski, Owen Taylor, Pablo
           Saratxaga, Panacea Inc., Panagiotis Tsirigotis, Paolo Severini,
           Pascal Haible, Patrick Lecoanet, Patrick Lerda, Paul Anderson,
           Paul Elliott, Paul Mackerras, Peter Breitenlohner, Peter Kunzmann,
           Peter Trattler, Philip Homburg, Precision Insight Inc., Prentice
           Hall, Quarterdeck Office Systems, Ralf Habacker Randy Hendry,
           Ranier Keller, Red Hat Inc., Regents of the University of
           California, Regis Cridlig, Rene Cougnenc, Richard A. Hecker,
           Richard Burdick, Rich Murphey, Rickard E. Faith, Rik Faith, Robert
           Chesler, Robert Millan, Robert V. Baron, Robin Cutshaw, Roland
           Mainz, Ronny Vindenes, Russ Blaine, Ryan Breen, Ryan Lortie, Ryan
           Underwood, S3 Graphics Inc., Sam Leffler, SciTech Software, Scott
           Laird, Sebastien Marineau, Shigehiro Nomura, ShoGraphics Inc.,
           Shunsuke Akiyama, Silicon Graphics Computer Systems Inc., Silicon
           Integrated Systems Corp Inc., Silicon Motion Inc., Simon P.
           Cooper, Snitily Graphics Consulting Services, Sony Corporation,
           S*ren Sandmann, SRI, Stanislav Brabec, Stefan Dirsch, Stephan
           Lang, Stephane Marchesin, Steven Lang, Stuart Kreitman, Sun
           Microsystems Inc., SunSoft Inc., SuSE Inc, Sven Luther, T. A.
           Phelps, Takis Psarogiannakopoulos, Takuma Murakami, Takuya
           SHIOZAKI, Tektronix Inc., The DOS-EMU-Development-Team, The
           Institute of Software Academia Sinica, The NetBSD Foundation, Theo
           de Raadt, Theodore Ts'o, The Open Group, The Open Software
           Foundation, The Regents of the University of California, The Santa
           Cruz Operation Inc., The Weather Channel Inc., The X Consortium,
           The XFree86 Project Inc., Thomas E. Dickey, Thomas G. Lane, Thomas
           Hellstr*m, Thomas Mueller, Thomas Roell, Thomas Thanner, Thomas
           Winischhofer, Thomas Wolfram, Thorsten.Ohl, Tiago Gons, Todd C.
           Miller, Tomohiro KUBOTA, Torrey Lyons, Torrey T. Lyons, TOSHIBA
           Corp., Toshimitsu Tanaka, Travis Tilley, Trolltech AS, Tungsten
           Graphics Inc., Tuomas J. Lukka, Ty Sarna, UCHIYAMA Yasushi,
           Unicode Inc., UniSoft Group Limited, University of Utah,
           University of Wisconsin, UNIX System Laboratories Inc., URW++
           GmbH, VA Linux Systems, VIA Technologies Inc., Video Electronics
           Standard, VMware Inc., Vrije Universiteit, Wittawat Yamwong, Wyse
           Technology Inc., X Consortium, Xi Graphics Inc., X-Oz
           Technologies, X-TrueType Server Project and their contributors, Yu
           Shao.

           This product includes software developed by The XFree86 Project,
           Inc (http://www.xfree86.org/) and its contributors.

           This produce includes software that is based in part of the work
           of the FreeType Team (http://www.freetype.org).

           This product includes software developed by the University of
           California, Berkeley and its contributors.

           This product includes software developed by Christopher G.
           Demetriou.

           This product includes software developed by the NetBSD Foundation,
           Inc. and its contributors.

           This product includes software developed by the X-Oz Technologies
           and its contributors.

References

   Visible links
   1. file:///tmp/html-qO4116#AEN9
   2. file:///tmp/html-qO4116#AEN19
   3. file:///tmp/html-qO4116#AEN42
   4. file:///tmp/html-qO4116#AEN482
   5. file:///tmp/html-qO4116#AEN660
   6. file:///tmp/html-qO4116#AEN680
   7. file:///tmp/html-qO4116#AEN698
   8. http://wiki.x.org/wiki/ModularDevelopersGuide
   9. https://bugs.freedesktop.org/
  10. mailto:xorg@lists.freedesktop.org
  11. file:///tmp/apm.html
  12. file:///tmp/ati.html
  13. file:///tmp/r128.html
  14. file:///tmp/r128.4.html
  15. file:///tmp/radeon.4.html
  16. file:///tmp/chips.html
  17. file:///tmp/chips.4.html
  18. file:///tmp/cyrix.html
  19. file:///tmp/fbdev.4.html
  20. file:///tmp/glint.4.html
  21. file:///tmp/I128.html
  22. file:///tmp/i128.4.html
  23. file:///tmp/i740.html
  24. file:///tmp/i810.html
  25. file:///tmp/i810.4.html
  26. file:///tmp/impact.4.html
  27. file:///tmp/mga.4.html
  28. file:///tmp/neomagic.4.html
  29. file:///tmp/newport.html
  30. file:///tmp/newport.4.html
  31. file:///tmp/nsc.4.html
  32. file:///tmp/nv.4.html
  33. file:///tmp/rendition.html
  34. file:///tmp/rendition.4.html
  35. file:///tmp/s3virge.html
  36. file:///tmp/s3virge.4.html
  37. file:///tmp/savage.4.html
  38. file:///tmp/siliconmotion.4.html
  39. file:///tmp/SiS.html
  40. file:///tmp/sis.4.html
  41. file:///tmp/sisusb.4.html
  42. file:///tmp/tdfx.4.html
  43. file:///tmp/DECtga.html
  44. file:///tmp/trident.4.html
  45. file:///tmp/vesa.4.html
  46. file:///tmp/vga.4.html
  47. file:///tmp/via.4.html
  48. file:///tmp/vmware.4.html
  49. file:///tmp/vmware.4.html
  50. file:///tmp/vmware.4.html
  51. file:///tmp/Darwin.html
  52. file:///tmp/aiptek.4.html
  53. file:///tmp/aiptek.4.html
  54. file:///tmp/citron.4.html
  55. file:///tmp/dmc.4.html
  56. file:///tmp/evdev.4.html
  57. file:///tmp/fpit.4.html
  58. file:///tmp/js_x.4.html
  59. file:///tmp/kbd.4.html
  60. file:///tmp/keyboard.4.html
  61. file:///tmp/mouse.4.html
  62. file:///tmp/palmax.4.html
  63. file:///tmp/tek4957.4.html
  64. file:///tmp/ur98.4.html
  65. file:///tmp/void.4.html
  66. file:///tmp/xorg.conf.5.html
  67. file:///tmp/xorg.conf.5.html
  68. file:///tmp/html-qO4116#DRIVERTABLES
  69. file:///tmp/Xorg.1.html
  70. file:///tmp/XDGA.3.man
  71. http://dri.sf.net/
  72. http://www.mesa3d.org/
  73. file:///tmp/Xft.3.man
  74. file:///tmp/fonts.html
  75. http://www.cl.cam.ac.uk/~mgk25/unicode.html
  76. file:///tmp/LICENSE.html
  77. mailto:design@bigelowandholmes.com
  78. mailto:info@urwpp.de
  79. http://www.urwpp.de/
  80. mailto:xorg@lists.freedesktop.org
  81. http://cvs.freedesktop.org/xorg/
