AllPlanes, BlackPixel, WhitePixel, ConnectionNumber, DefaultColormap, DefaultDepth, XListDepths, DefaultGC, DefaultRootWindow, DefaultScreenOfDisplay, DefaultScreen, DefaultVisual, DisplayCells, DisplayPlanes, DisplayString, XMaxRequestSize, XExtendedMaxRequestSize, LastKnownRequestProcessed, NextRequest, ProtocolVersion, ProtocolRevision, QLength, RootWindow, ScreenCount, ScreenOfDisplay, ServerVendor, VendorRelease (3x) - Display macros and functions
BlackPixelOfScreen, WhitePixelOfScreen, CellsOfScreen, DefaultColormapOfScreen, DefaultDepthOfScreen, DefaultGCOfScreen, DefaultVisualOfScreen, DoesBackingStore, DoesSaveUnders, DisplayOfScreen, XScreenNumberOfScreen, EventMaskOfScreen, HeightOfScreen, HeightMMOfScreen, MaxCmapsOfScreen, MinCmapsOfScreen, PlanesOfScreen, RootWindowOfScreen, WidthOfScreen, WidthMMOfScreen (3x) - screen information functions and macros
DBE (3x)             - Double Buffer Extension
DisplayOfCCC, VisualOfCCC, ScreenNumberOfCCC, ScreenWhitePointOfCCC, ClientWhitePointOfCCC (3x) - Color Conversion Context macros
FvwmAudio (1)        - the FVWM Audio module
FvwmAuto (1)         - the FVWM auto-raise module
FvwmBacker (1)       - the FVWM background changer module
FvwmBanner (1)       - the FVWM Banner
FvwmButtons (1)      - the FVWM buttonbox module
FvwmCascade (1)      - layer FVWM windows
FvwmConsole (1)      - the FVWM command input interface
FvwmCpp (1)          - the FVWM Cpp pre-processor
FvwmDebug (1)        - the FVWM module debugger
FvwmForm (1)         - input form module for Fvwm
FvwmIconBox (1)      - the FVWM iconbox module
FvwmIconMan (1)      - an Fvwm Icon Manager
FvwmIdent (1)        - the FVWM identify-window module
FvwmM4 (1)           - the FVWM M4 pre-processor
FvwmPager (1)        - the FVWM Pager module
FvwmSave (1)         - the FVWM desktop-layout saving module
FvwmSaveDesk (1)     - another FVWM desktop-layout saving module
FvwmScroll (1)       - the FVWM scroll-bar module
FvwmTalk (1)         - the FVWM command line interface
FvwmTaskBar (1)      - the FVWM taskbar module
FvwmTile (1)         - tile FVWM windows
FvwmWinList (1)      - the FVWM window list module
GPC (3)              - GTK Plug-in Convenience library
Gimp (1)             - an image manipulation and paint program.
ImageByteOrder, BitmapBitOrder, BitmapPad, BitmapUnit, DisplayHeight, DisplayHeightMM, DisplayWidth, DisplayWidthMM, XListPixmapFormats, XPixmapFormatValues (3x) - image format functions and macros
IsCursorKey, IsFunctionKey, IsKeypadKey, IsMiscFunctionKey, IsModiferKey, IsPFKey, IsPrivateKeypadKey (3x) - keysym classification macros
Scripting Facilities for x3270 (1) - 
SuperProbe (1x)      - probe for and identify installed video hardware.
TkDesk (1)           - a Graphical File and Desktop Manager for the X Window System
X (3x)               - a portable, network-transparent window system
XAddConnectionWatch, XRemoveConnectionWatch, XProcessInternalConnection, XInternalConnectionNumbers (3x) - handle Xlib internal connections
XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts, XSetAccessControl, XEnableAccessControl, XDisableAccessControl, XHostAddress (3x) - control host access and host control structure
XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint (3x) - allocate class hints structure and set or read a window's WM_CLASS property
XAllocColor, XAllocNamedColor, XAllocColorCells, XAllocColorPlanes, XFreeColors (3x) - allocate and free colors
XAllocIconSize, XSetIconSizes, XGetIconSizes, XIconSize (3x) - allocate icon size structure and set or read a window's WM_ICON_SIZES property
XAllocSizeHints, XSetWMNormalHints, XGetWMNormalHints, XSetWMSizeHints, XGetWMSizeHints, XSizeHints (3x) - allocate size hints structure and set or read a window's WM_NORMAL_HINTS property
XAllocStandardColormap, XSetRGBColormaps, XGetRGBColormaps, XStandardColormap (3x) - allocate, set, or read a standard colormap structure
XAllocWMHints, XSetWMHints, XGetWMHints, XWMHints (3x) - allocate window manager hints structure and set or read a window's WM_HINTS property
XAllowDeviceEvents (3x) - release queued events
XAllowEvents (3x)    - release queued events
XAnyEvent, XEvent (3x) - generic X event structures
XButtonEvent, XKeyEvent, XMotionEvent (3x) - KeyPress, KeyRelease, ButtonPress, ButtonRelease, and MotionNotify event structures
XChangeDeviceDontPropagateList, XGetDeviceDontPropagateList (3x) - query or change the dont-propagate-list for extension devices
XChangeKeyboardControl, XGetKeyboardControl, XAutoRepeatOn, XAutoRepeatOff, XBell, XQueryKeymap, XKeyboardControl (3x) - manipulate keyboard settings and keyboard control structure
XChangeKeyboardDevice (3x) - change which device is used as the X keyboard
XChangeKeyboardMapping, XGetKeyboardMapping, XDisplayKeycodes, XSetModifierMapping, XGetModifierMapping, XNewModifiermap, XInsertModifiermapEntry, XDeleteModifiermapEntry, XFreeModifierMap XModifierKeymap (3x) - manipulate keyboard encoding and keyboard encoding structure
XChangePointerControl, XGetPointerControl (3x) - control pointer
XChangePointerDevice (3x) - change which device is the X pointer
XChangeSaveSet, XAddToSaveSet, XRemoveFromSaveSet (3x) - change a client's save set
XChangeWindowAttributes, XSetWindowBackground, XSetWindowBackgroundPixmap, XSetWindowBorder, XSetWindowBorderPixmap, XSetWindowColormap (3x) - change window attributes
XCirculateEvent (3x) - CirculateNotify event structure
XCirculateRequestEvent (3x) - CirculateRequest event structure
XClearArea, XClearWindow (3x) - clear area or window
XClientMessageEvent (3x) - ClientMessage event structure
XColormapEvent (3x)  - ColormapNotify event structure
XConfigureEvent (3x) - ConfigureNotify event structure
XConfigureRequestEvent (3x) - ConfigureRequest event structure
XConfigureWindow, XMoveWindow, XResizeWindow, XMoveResizeWindow, XSetWindowBorderWidth, XWindowChanges (3x) - configure windows and window changes structure
XConsortium (3x)     - X Consortium information
XCopyArea, XCopyPlane (3x) - copy areas
XCreateColormap, XCopyColormapAndFree, XFreeColormap, XColor (3x) - create, copy, or destroy colormaps and color structure
XCreateFontCursor, XCreatePixmapCursor, XCreateGlyphCursor (3x) - create cursors
XCreateFontSet, XFreeFontSet (3x) - create and free an international text drawing font set
XCreateGC, XCopyGC, XChangeGC, XGetGCValues, XFreeGC, XGContextFromGC, XGCValues (3x) - create or free graphics contexts and graphics context structure
XCreateIC, XDestroyIC, XIMOfIC (3x) - create, destroy, and obtain the input method of an input context
XCreateOC, XDestroyOC, XSetOCValues, XGetOCValues, XOMOfOC (3x) - create output contexts
XCreatePixmap, XFreePixmap (3x) - create or destroy pixmaps
XCreateRegion, XSetRegion, XDestroyRegion (3x) - create or destroy regions
XCreateWindow, XCreateSimpleWindow, XSetWindowAttributes (3x) - create windows and window attributes structure
XCreateWindowEvent (3x) - CreateNotify event structure
XCrossingEvent (3x)  - EnterNotify and LeaveNotify event structure
XDefineCursor, XUndefineCursor (3x) - define cursors
XDestroyWindow, XDestroySubwindows (3x) - destroy windows
XDestroyWindowEvent (3x) - DestroyNotify event structure
XDeviceBell (3x)     - ring a bell on a device supported through the input extension
XDrawArc, XDrawArcs, XArc (3x) - draw arcs and arc structure
XDrawImageString, XDrawImageString16 (3x) - draw image text
XDrawLine, XDrawLines, XDrawSegments, XSegment (3x) - draw lines, polygons, and line structure
XDrawPoint, XDrawPoints, XPoint (3x) - draw points and points structure
XDrawRectangle, XDrawRectangles, XRectangle (3x) - draw rectangles and rectangles structure
XDrawString, XDrawString16 (3x) - draw text characters
XDrawText, XDrawText16, XTextItem, XTextItem16 (3x) - draw polytext text and text drawing structures
XEmptyRegion, XEqualRegion, XPointInRegion, XRectInRegion (3x) - determine if regions are empty or equal
XErrorEvent (3x)     - X error event structure
XExposeEvent (3x)    - Expose event structure
XExtentsOfFontSet (3x) - obtain the maximum extents structure for a font set
XF86Config (5x)      - Configuration File for XFree86
XF86DGAQueryExtension, XF86DGAQueryVersion, XF86DGAQueryDirectVideo, XF86DGAGetVideo, XF86DGADirectVideo, XF86DGASetVidPage, XF86DGASetViewPort, XF86DGAViewPortChanged, XF86DGAGetViewPortSize, XF86DGAInstallColormap, XF86DGAForkApp (3x) - XFree86-DGA extension interface functions
XF86MiscQueryExtension, XF86MiscQueryVersion, XF86MiscGetMouseSettings, XF86MiscSetMouseSettings, XF86MiscGetKbdSettings, XF86MiscSetKbdSettings (3x) - XFree86-Misc extension interface functions
XF86Setup (1x)       - Graphical configuration utility for XFree86
XF86VidModeQueryExtension, XF86VidModeQueryVersion, XF86VidModeGetModeLine, XF86VidModeGetAllModeLines, XF86VidModeDeleteModeLine, XF86VidModeModModeLine, XF86VidModeValidateModeLine, XF86VidModeSwitchMode, XF86VidModeSwitchToMode, XF86VidModeLockModeSwitch, XF86VidModeGetMonitor, XF86VidModeGetViewPort, XF86VidModeSetViewPort (3x) - XFree86-VidMode extension interface functions
XF86_Accel (1x)      - accelerated X Window System servers for UNIX on x86 and Alpha platforms with an S3, Mach8, Mach32, Mach64, P9000, AGX, ET4000/W32, ET6000, I128, TGA, or 8514/A accelerator board
XF86_Mono (1x)       - 1 bit non-accelerated X Window System servers for UNIX on x86 platforms
XF86_SVGA (1x)       - SVGA X Window System servers for UNIX on x86 platforms
XF86_VGA16 (1x)      - 4 bit non-accelerated X Window System server for UNIX on x86 platforms
XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs (3x) - fill rectangles, polygons, or arcs
XFilterEvent (3x)    - filter X events for an input method
XFlush, XSync, XEventsQueued, XPending (3x) - handle output buffer or event queue
XFocusChangeEvent (3x) - FocusIn and FocusOut event structure
XFontSetExtents (3x) - XFontSetExtents structure
XFontsOfFontSet, XBaseFontNameListOfFontSet, XLocaleOfFontSet, XContextDependentDrawing, XContextualDrawing, XDirectionalDependentDrawing (3x) - obtain fontset information
XFree (3x)           - free client data
XFree86 (1x)         - X11R6 for UNIX on x86 platforms
XGetDeviceControl, XChangeDeviceControl (3x) - query and change input device controls
XGetDeviceKeyMapping, XChangeDeviceKeyMapping (3x) - query or change device key mappings
XGetDeviceModifierMapping, XSetDeviceModifierMapping (3x) - query or change device modifier mappings
XGetDeviceMotionEvents, XDeviceTimeCoord (3x) - get device motion history
XGetExtensionVersion (3x) - query the version of the input extension.
XGetFeedbackControl, XChangeFeedbackControl (3x) - query and change input device feedbacks
XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual, XVisualInfo (3x) - obtain visual information and visual structure
XGetWindowAttributes, XGetGeometry, XWindowAttributes (3x) - get current window attribute or geometry and current window attributes structure
XGetWindowProperty, XListProperties, XChangeProperty, XRotateWindowProperties, XDeleteProperty (3x) - obtain and change window properties
XGrabButton, XUngrabButton (3x) - grab pointer buttons
XGrabDevice, XUngrabDevice (3x) - grab/release the specified extension device
XGrabDeviceButton, XUngrabDeviceButton (3x) - grab/ungrab extension input device buttons
XGrabDeviceKey, XUngrabDeviceKey (3x) - grab/ungrab extension input device Keys
XGrabKey, XUngrabKey (3x) - grab keyboard keys
XGrabKeyboard, XUngrabKeyboard (3x) - grab the keyboard
XGrabPointer, XUngrabPointer, XChangeActivePointerGrab (3x) - grab the pointer
XGrabServer, XUngrabServer (3x) - grab the server
XGraphicsExposeEvent, XNoExposeEvent (3x) - GraphicsExpose and NoExpose event structures
XGravityEvent (3x)   - GravityNotify event structure
XIconifyWindow, XWithdrawWindow, XReconfigureWMWindow (3x) - manipulate top-level windows
XIfEvent, XCheckIfEvent, XPeekIfEvent (3x) - check the event queue with a predicate procedure
XInitImage, XCreateImage, XGetPixel, XPutPixel, XSubImage, XAddPixel, XDestroyImage (3x) - image utilities
XInitThreads, XLockDisplay, XUnlockDisplay (3x) - multi-threading support
XInstallColormap, XUninstallColormap, XListInstalledColormaps (3x) - control colormaps
XInternAtom, XInternAtoms, XGetAtomName, XGetAtomNames (3x) - create or return atom names
XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion (3x) - region arithmetic
XKeymapEvent (3x)    - KeymapNotify event structure
XListFonts, XFreeFontNames, XListFontsWithInfo, XFreeFontInfo (3x) - obtain or free font names and information
XListInputDevices, XFreeDeviceList (3x) - list available input devices
XLoadFont, XQueryFont, XLoadQueryFont, XFreeFont, XGetFontProperty, XUnloadFont, XCharStruct, XFontProp, XChar2b, XFontStruct (3x) - load or unload fonts and font metric structures
XLookupKeysym, XRefreshKeyboardMapping, XLookupString, XRebindKeySym (3x) - handle keyboard input events in Latin-1
XMapEvent, XMappingEvent (3x) - MapNotify and MappingNotify event structures
XMapRequestEvent (3x) - MapRequest event structure
XMapWindow, XMapRaised, XMapSubwindows (3x) - map windows
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent (3x) - select events by type
XNoOp (3x)           - No Operation
XOpenDevice, XCloseDevice (3x) - open or close an extension input device
XOpenDisplay, XCloseDisplay (3x) - connect or disconnect to X server
XOpenIM, XCloseIM, XSetIMValues, XGetIMValues, XDisplayOfIM, XLocaleOfIM, XRegisterIMInstantiateCallback, XUnregisterIMInstantiateCallback (3x) - open, close, and otain input method information
XOpenOM, XCloseOM, XSetOMValues, XGetOMValues, XDisplayOfOM, XLocaleOfOM (3x) - open output methods
XParseGeometry, XWMGeometry (3x) - parse window geometry
XPolygonRegion, XClipBox (3x) - generate regions
XPropertyEvent (3x)  - PropertyNotify event structure
XPutBackEvent (3x)   - put events back on the queue
XPutImage, XGetImage, XGetSubImage (3x) - transfer images
XQueryBestSize, XQueryBestTile, XQueryBestStipple (3x) - determine efficient sizes
XQueryColor, XQueryColors, XLookupColor, XParseColor (3x) - obtain color values
XQueryDeviceState (3x) - query the state of an extension input device.
XQueryPointer (3x)   - get pointer coordinates
XQueryTree (3x)      - query window tree information
XRaiseWindow, XLowerWindow, XCirculateSubwindows, XCirculateSubwindowsUp, XCirculateSubwindowsDown, XRestackWindows (3x) - change window stacking order
XReadBitmapFile, XReadBitmapFileData, XWriteBitmapFile, XCreatePixmapFromBitmapData, XCreateBitmapFromData (3x) - manipulate bitmaps
XRecolorCursor, XFreeCursor, XQueryBestCursor (3x) - manipulate cursors
XReparentEvent (3x)  - ReparentNotify event structure
XReparentWindow (3x) - reparent windows
XResizeRequestEvent (3x) - ResizeRequest event structure
XResourceManagerString, XScreenResourceString (3x) - obtain server resource properties
XSaveContext, XFindContext, XDeleteContext, XUniqueContext (3x) - associative look-up routines
XSelectExtensionEvent, XGetSelectedExtensionEvents (3x) - select extension events, get the list of currently selected extension events
XSelectInput (3x)    - select input events
XSelectionClearEvent (3x) - SelectionClear event structure
XSelectionEvent (3x) - SelectionNotify event structure
XSelectionRequestEvent (3x) - SelectionRequest event structure
XSendEvent, XDisplayMotionBufferSize, XGetMotionEvents, XTimeCoord (3x) - send events and pointer motion history structure
XSendExtensionEvent (3x) - send input extension events to a client
XSetArcMode, XSetSubwindowMode, XSetGraphicsExposure (3x) - GC convenience routines
XSetClipOrigin, XSetClipMask, XSetClipRectangles (3x) - GC convenience routines
XSetCloseDownMode, XKillClient (3x) - control clients
XSetCommand, XGetCommand (3x) - set or read a window's WM_COMMAND property
XSetDeviceButtonMapping, XGetDeviceButtonMapping (3x) - query or change device button mappings
XSetDeviceFocus, XGetDeviceFocus (3x) - control extension input device focus
XSetDeviceMode (3x)  - change the mode of a device
XSetDeviceValuators (3x) - initialize the valuators on an extension input device
XSetErrorHandler, XGetErrorText, XDisplayName, XSetIOErrorHandler, XGetErrorDatabaseText (3x) - default error handlers
XSetFillStyle, XSetFillRule (3x) - GC convenience routines
XSetFont (3x)        - GC convenience routines
XSetFontPath, XGetFontPath, XFreeFontPath (3x) - set, get, or free the font search path
XSetICFocus, XUnsetICFocus (3x) - set and unset input context focus
XSetICValues, XGetICValues (3x) - set and obtain XIC values
XSetInputFocus, XGetInputFocus (3x) - control input focus
XSetLineAttributes, XSetDashes (3x) - GC convenience routines
XSetPointerMapping, XGetPointerMapping (3x) - manipulate pointer settings
XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreenSaver, XGetScreenSaver (3x) - manipulate the screen saver
XSetSelectionOwner, XGetSelectionOwner, XConvertSelection (3x) - manipulate window selection
XSetState, XSetFunction, XSetPlanemask, XSetForeground, XSetBackground (3x) - GC convenience routines
XSetTextProperty, XGetTextProperty (3x) - set and read text properties
XSetTile, XSetStipple, XSetTSOrigin (3x) - GC convenience routines
XSetTransientForHint, XGetTransientForHint (3x) - set or read a window's WM_TRANSIENT_FOR property
XSetWMClientMachine, XGetWMClientMachine (3x) - set or read a window's WM_CLIENT_MACHINE property
XSetWMColormapWindows, XGetWMColormapWindows (3x) - set or read a window's WM_COLORMAP_WINDOWS property
XSetWMIconName, XGetWMIconName, XSetIconName, XGetIconName (3x) - set or read a window's WM_ICON_NAME property
XSetWMName, XGetWMName, XStoreName, XFetchName (3x) - set or read a window's WM_NAME property
XSetWMProperties, XmbSetWMProperties (3x) - set standard window properties
XSetWMProtocols, XGetWMProtocols (3x) - set or read a window's WM__PROTOCOLS property
XShapeQueryExtension, XShapeQueryVersion, XShapeCombineRegion, XShapeCombineRectangles, XShapeCombineMask, XShapeCombineShape, XShapeOffsetShape, XShapeQueryExtents, XShapeSelectInput, XShapeInputSelected, XShapeGetRectangles (3x) - X nonrectangular shape functions
XStandards (3x)      - X Consortium Standards
XStoreBytes, XStoreBuffer, XFetchBytes, XFetchBuffer, XRotateBuffers (3x) - manipulate cut and paste buffers
XStoreColors, XStoreColor, XStoreNamedColor (3x) - set colors
XStringListToTextProperty, XTextPropertyToStringList, XFreeStringList, XTextProperty (3x) - convert string lists and text property structure
XStringToKeysym, XKeysymToString, XKeycodeToKeysym, XKeysymToKeycode, XConvertCase (3x) - convert keysyms
XSupportsLocale, XSetLocaleModifiers (3x) - determine locale support and configure locale modifiers
XSynchronize, XSetAfterFunction (3x) - enable or disable synchronization
XTextExtents, XTextExtents16, XQueryTextExtents, XQueryTextExtents16 (3x) - compute or query text extents
XTextWidth, XTextWidth16 (3x) - compute text width
XTranslateCoordinates (3x) - translate window coordinates
XUnmapEvent (3x)     - UnmapNotify event structure
XUnmapWindow, XUnmapSubwindows (3x) - unmap windows
XVaCreateNestedList (3x) - allocate a nested variable argument list
XVisibilityNotifyEvent (3x) - VisibilityNotify event structure
XWarpPointer (3x)    - move pointer
Xau library: XauFileName, XauReadAuth, XauLockAuth, XauUnlockAuth, XauWriteAuth, XauDisposeAuth, XauGetAuthByAddr, XauGetBestAuthByAddr (3x) - X authority database routines
XcmsAllocColor, XcmsAllocNamedColor (3x) - allocate colors
XcmsCCCOfColormap, XcmsSetCCCOfColormap (3x) - query and modify CCC of a colormap
XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQueryMaxLC, XcmsCIELabQueryMinL (3x) - obtain the CIE L*a*b* coordinates
XcmsCIELuvQueryMaxC, XcmsCIELuvQueryMaxL, XcmsCIELuvQueryMaxLC, XcmsCIELuvQueryMinL (3x) - obtain the CIE L*u*v* coordinates
XcmsColor, XcmsRGB, XcmsRGBi, XcmsCIEXYZ, XcmsCIEuvY, XcmsCIExyY, XcmsCIELab, XcmsCIELuv, XcmsTekHVC, XcmsPad (3x) - Xcms color struture
XcmsConvertColors (3x) - convert CCC color specifications
XcmsCreateCCC, XcmsFreeCCC (3x) - creating and destroying CCCs
XcmsDefaultCCC (3x)  - obtain the default CCC for a screen
XcmsQueryBlack, XcmsQueryBlue, XcmsQueryGreen, XcmsQueryRed, XcmsQueryWhite (3x) - obtain black, blue, green, red, and white CCC color specifications
XcmsQueryColor, XcmsQueryColors, XcmsLookupColor (3x) - obtain color values
XcmsSetWhitePoint, XcmsSetWhiteAdjustProc (3x) - modifying CCC attributes
XcmsStoreColor, XcmsStoreColors (3x) - set colors
XcmsTekHVCQueryMaxC, XcmsTekHVCQueryMaxV, XcmsTekHVCQueryMaxVC, XcmsTekHVCQueryMaxVSamples, XcmsTekHVCQueryMinV (3x) - obtain the TekHVC coordinates
XdbeAllocateBackBufferName (3x) - allocates a DBE buffer.
XdbeBeginIdiom (3x)  - marks the beginning of a DBE idiom sequence.
XdbeDeallocateBackBufferName (3x) - frees a DBE buffer.
XdbeEndIdiom (3x)    - marks the end of a DBE idiom sequence.
XdbeFreeVisualInfo (3x) - frees information returned by XdbeGetVisualInfo().
XdbeGetBackBufferAttributes (3x) - returns attributes of a DBE buffer.
XdbeGetVisualInfo (3x) - 
XdbeQueryExtension (3x) - returns the version of DBE supported by the server.
XdbeSwapBuffers (3x) - swaps front and back DBE buffers.
XmbDrawImageString, XwcDrawImageString (3x) - draw image text using a single font set
XmbDrawString, XwcDrawString (3x) - draw text using a single font set
XmbDrawText, XwcDrawText (3x) - draw text using multiple font sets
XmbLookupString, XwcLookupString (3x) - obtain composed input from an input method
XmbResetIC, XwcResetIC (3x) - reset the state of an input context
XmbTextEscapement, XwcTextEscapement (3x) - obtain the escapement of text
XmbTextExtents, XwcTextExtents (3x) - compute text extents
XmbTextListToTextProperty, XwcTextListToTextProperty, XmbTextPropertyToTextList, XwcTextPropertyToTextList, XwcFreeStringList, XDefaultString (3x) - convert text lists and text property structures
XmbTextPerCharExtents, XwcTextPerCharExtents (3x) - obtain per-character information for a text string
XmbufQueryExtension, XmbufGetVersion, XmbufCreateBuffers, XmbufDestroyBuffers, XmbufDisplayBuffers, XmbufGetWindowAttributes, XmbufChangeWindowAttributes, XmbufGetBufferAttributes, XmbufChangeBufferAttributes, XmbufGetScreenInfo, XmbufCreateStereoWindow (3x) - X multibuffering functions
Xnest (1x)           - a nested X server
XrmEnumerateDatabase (3x) - enumerate resource database entries
XrmGetFileDatabase, XrmPutFileDatabase, XrmGetStringDatabase, XrmLocaleOfDatabase, XrmGetDatabase, XrmSetDatabase, XrmDestroyDatabase (3x) - retrieve and store resource databases
XrmGetResource, XrmQGetResource, XrmQGetSearchList, XrmQGetSearchResource (3x) - retrieve database resources and search lists
XrmInitialize, XrmParseCommand, XrmValue, XrmOptionKind, XrmOptionDescRec (3x) - initialize the Resource Manager, Resource Manager structures, and parse the command line
XrmMergeDatabases, XrmCombineDatabase, XrmCombineFileDatabase (3x) - merge resource databases
XrmPutResource, XrmQPutResource, XrmPutStringResource, XrmQPutStringResource, XrmPutLineResource (3x) - store database resources
XrmUniqueQuark, XrmStringToQuark, XrmPermStringToQuark, XrmQuarkToString, XrmStringToQuarkList, XrmStringToBindingQuarkList (3x) - manipulate resource quarks
Xsecurity (3x)       - X display access control
Xserver (1x)         - X Window System display server
XtAddActions (3x)    - register an action table
XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks, XtRemoveAllCallbacks (3x) - add and remove callback procedures
XtAddEventHandler, XtAddRawEventHandler, XtRemoveEventHandler, XtRemoveRawEventHandler, XtInsertEventHandler, XtInsertRawEventHandler (3x) - add and remove event handlers
XtAddExposureToRegion (3x) - merge exposure events into a region
XtAddGrab, XtRemoveGrab (3x) - redirect user input to a modal widget
XtAddInput, XtAddTimeout (3x) - register input, timeout, and workprocs
XtAllocateGC (3x)    - obtain a sharable GC with modifiable fields
XtAppAddActionHook, XtRemoveActionHook (3x) - register an action hook procedure
XtAppAddActions (3x) - register an action table
XtAppAddBlockHook, XtRemoveBlockHook (3x) - register a block hook procedure
XtAppAddConverter, XtAddConverter (3x) - register resource converter
XtAppAddInput, XtRemoveInput (3x) - register and remove an input source
XtAppAddSignal, XtRemoveSignal, XtNoticeSignal (3x) - register and remove a signal source
XtAppAddTimeOut, XtRemoveTimeOut (3x) - register and remove timeouts
XtAppAddWorkProc, XtRemoveWorkProc (3x) - Add and remove background processing procedures
XtAppCreateShell, XtVaAppCreateShell (3x) - create top-level widget instance
XtAppError, XtAppSetErrorHandler, XtAppSetWarningHandler, XtAppWarning (3x) - low-level error handlers
XtAppErrorMsg, XtAppSetErrorMsgHandler, XtAppSetWarningMsgHandler, XtAppWarningMsg (3x) - high-level error handlers
XtAppGetErrorDatabase, XtAppGetErrorDatabaseText (3x) - obtain error database
XtAppGetSelectionTimeout, XtAppSetSelectionTimeout (3x) - set and obtain selection timeout values
XtAppInitialize, XtVaAppInitialize (3x) - initialize, open, or close a display
XtAppLock, XtAppUnlock (3x) - lock and unlock application context
XtAppNextEvent, XtAppPending, XtAppPeekEvent, XtAppProcessEvent, XtDispatchEvent, XtAppMainLoop (3x) - query and process events and input
XtAppReleaseCacheRefs (3x) - decrement reference counts for resources
XtAppSetExitFlag, XtAppGetExitFlag (3x) - thread support functions
XtAppSetFallbackResources (3x) - set fallback resources
XtAppSetTypeConverter, XtSetTypeConverter (3x) - register resource converter
XtBuildEventMask (3x) - retrieve a widget's event mask
XtCallAcceptFocus (3x) - calla widget's accept_focus procedure
XtCallActionProc (3x) - invoke an action procedure directly
XtCallCallbacks, XtCallCallbackList, XtHasCallbacks (3x) - process callbacks
XtClass, XtSuperclass, XtIsSubclass, XtCheckSubclass, XtIsObject, XtIsRectObj, XtIsWidget, XtIsComposite, XtIsConstraint, XtIsShell, XtIsOverrideShell, XtIsWMShell, XtIsVendorShell, XtIsTransientShell, XtIsTopLevelShell, XtIsApplicationShell, XtIsSessionShell (3x) - obtain and verify a widget's class
XtConfigureWidget, XtMoveWidget, XtResizeWidget (3x) - move and resize widgets
XtConvert, XtDirectConvert (3x) - invoke resource converters
XtConvertAndStore, XtCallConverter (3x) - invoke resource converters
XtCreateApplicationContext, XtDestroyApplicationContext, XtWidgetToApplicationContext, XtToolkitInitialize (3x) - create, destroy, and obtain an application context
XtCreateApplicationShell (3x) - create top-level widget instance
XtCreatePopupShell, XtVaCreatePopupShell (3x) - create a popup shell
XtCreateSelectionRequest, XtSendSelectionRequest, XtCancelSelectionRequest (3x) - bundle multiple selection conversion requests into a single request using MULTIPLE target
XtCreateWidget, XtVaCreateWidget, XtCreateManagedWidget, XtVaCreateManagedWidget, XtDestroyWidget (3x) - create and destroy widgets
XtCreateWindow (3x)  - window creation convenience function
XtDisplay, XtDisplayOfObject, XtScreen, XtScreenOfObject, XtWindow, XtWindowOfObject (3x) - obtain window information about a widget
XtDisplayInitialize, XtOpenDisplay, XtDatabase, XtScreenDatabase, XtCloseDisplay (3x) - initialize, open, or close a display
XtDisplayStringConversionWarning (3x) - issue a conversion warning message
XtDisplayToApplicationContext (3x) - obtain an application context
XtError, XtSetErrorHandler, XtSetWarningHandler, XtWarning (3x) - low-level error handlers
XtErrorMsg, XtSetErrorMsgHandler, XtWarningMsg, XtSetWarningMsgHandler (3x) - high-level error handlers
XtFindFile (3x)      - search for a file using substitutions in the path list
XtGetActionKeysym (3x) - obtain corresponding keysym
XtGetActionList (3x) - obtain class action list
XtGetApplicationNameAndClass (3x) - retrieve application name and class
XtGetApplicationResources, XtVaGetApplicationResources (3x) - obtain application resources
XtGetClassExtension (3x) - locate a class extension record
XtGetDisplays (3x)   - retrieve a list of displays associated with an application context
XtGetErrorDatabase, XtGetErrorDatabaseText (3x) - obtain error database
XtGetGC, XtReleaseGC (3x) - obtain and destroy a sharable GC
XtGetKeyboardFocusWidget (3x) - extension event handling
XtGetKeysymTable, XtKeysymToKeycodeList (3x) - query keysyms and keycodes
XtGetResourceList, XtGetConstraintResourceList (3x) - obtain resource list
XtGetSelectionParameters (3x) - retrieve target parameters for a selection request with a single target
XtGetSelectionRequest (3x) - retrieve the event that triggered the XtConvertSelectionProc
XtGetSelectionTimeout, XtSetSelectionTimeout (3x) - set and obtain selection timeout values
XtGetSelectionValue, XtGetSelectionValues (3x) - obtain selection values
XtGetSelectionValueIncremental, XtGetSelectionValuesIncremental (3x) - obtain selection values
XtGetSubresources, XtVaGetSubresources (3x) - obtain subresources
XtGrabKey, XtUngrabKey, XtGrabKeyboard, XtUngrabKeyboard, XtGrabButton, XtUngrabButton, XtGrabPointer, XtUngrabPointer (3x) - manage grabs
XtHooksOfDisplay (3x) - external agent access points
XtInitialize (3x)    - initialize
XtInitializeWidgetClass (3x) - initialize a widget class
XtInsertEventTypeHandler, XtRemoveEventTypeHandler, XtRegisterExtensionSelector, XtSetEventDispatcher, XtDispatchEventToWidget (3x) - extension event handling
XtLastEventProcessed, XtLastTimestampProcessed (3x) - last event, last timestamp processed
XtMakeGeometryRequest, XtMakeResizeRequest (3x) - make geometry manager request
XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString (3x) - memory management functions
XtManageChildren, XtManageChild, XtUnmanageChildren, XtUnmanageChild, XtChangeManagedSet, XtIsManaged (3x) - manage and unmanage children
XtMapWidget, XtSetMappedWhenManaged, XtUnmapWidget (3x) - map and unmap widgets
XtName (3x)          - obtain widget's name
XtNameToWidget, XtWindowToWidget (3x) - translating strings to widgets or widgets to windows
XtNextEvent, XtPending, XtPeekEvent, XtProcessEvent, XtMainLoop (3x) - query and process events and input
XtOffset, XtOffsetOf, XtNumber (3x) - determine the byte offset or number of array elements
XtOpenApplication, XtVaOpenApplication (3x) - initialize, open, or close a display
XtOwnSelection, XtOwnSelectionIncremental, XtDisownSelection (3x) - set selection owner
XtParent (3x)        - obtain widget's parent widget id
XtParseAcceleratorTable, XtInstallAccelerators, XtInstallAllAccelerators (3x) - managing accelerator tables
XtParseTranslationTable, XtAugmentTranslations, XtOverrideTranslations, XtUninstallTranslations (3x) - manage translation tables
XtPopdown, XtCallbackPopdown (3x) - unmap a pop-up
XtPopup, XtPopupSpringLoaded, XtCallbackNone, XtCallbackNonexclusive, XtCallbackExclusive (3x) - map a pop-up
XtProcessLock, XtProcessUnlock (3x) - lock and unlock process
XtQueryGeometry (3x) - query the preferred geometry of a child widget
XtRealizeWidget, XtIsRealized, XtUnrealizeWidget (3x) - realize and unrealize widgets
XtRegisterDrawable (3x) - register a drawable with the Intrisics event dispatcher
XtRegisterGrabAction (3x) - register button and key grabs
XtReservePropertyAtom, XtReleasePropertyAtom (3x) - maintain a cache of property atoms
XtResolvePathname (3x) - search for a file using standard substitution
XtSessionGetToken, XtSessionReturnToken (3x) - token management for checkpointing
XtSetArg, XtMergeArgLists (3x) - set and merge ArgLists
XtSetKeyTranslator, XtTranslateKeycode, XtRegisterCaseConverter, XtConvertCase (3x) - convert KeySym to KeyCodes
XtSetKeyboardFocus (3x) - focus events on a child widget
XtSetLanguageProc (3x) - set the language procedure
XtSetMultiClickTime, XtGetMultiClickTime (3x) - set and get multi-click times
XtSetSelectionParameters (3x) - specify target parameters for a selection request with a single target
XtSetSensitive, XtIsSensitive (3x) - set and check a widget's sensitivity state
XtSetValues, XtVaSetValues, XtSetSubvalues, XtVaSetSubvalues, XtGetValues, XtVaGetValues, XtGetSubvalues, XtVaGetSubvalues (3x) - obtain and set widget resources
XtSetWMColormapWindows (3x) - Set the value of the WM_COLORMAP_WINDOWS property
XtStringConversionWarning (3x) - issue a conversion warning message
XtToolkitThreadInitialize (3x) - initialize the toolkit for multiple threads
XtTranslateCoords (3x) - translate widget coordinates
XtVaCreateArgsList (3x) - dynamically allocate a varargs list
Xvfb (1x)            - virtual framebuffer X server for X Version 11
appres (1x)          - list X application resource database
asapm (1)            - the AfterStep APM monitor
bdftopcf (1x)        - convert X font from Bitmap Distribution Format to Portable Compiled Format
beforelight (1x)     - screen saver
bggen (1)            - generates colored backgrounds on X11 displays
bitmap, bmtoa, atobm (1x) - bitmap editor and converter utilities for the X Window System
cd-tkdesk (1)        - change directory of TkDesk's current file browser or list window
cmail (6)            - an email chess helper
cxpm (1)             - Check an XPM (X PixMap) file - XPM 1, 2, or 3.
dga (1x)             - test program for the XFree86-DGA extension
ed-tkdesk (1)        - edit a file using TkDesk's editor
editres (1x)         - a dynamic resource editor for X Toolkit applications
fig2dev (1)          - translates Fig code to various graphics languages
fig2ps2tex (1)       - generate a TeX file for including a PostScript file
fsinfo (1x)          - X font server information utility
fslsfonts (1x)       - list fonts served by X font server
fstobdf (1x)         - generate BDF font from X font server
fvwm2 (1)            - F(?) Virtual Window Manager (version 2.xx) for X11
fvwm95 (1)           - F(?) Virtual Window Manager for X11 with Win95 look and feel
gimptool (1)         - script to perform various Gimpy functions
gtk-config (1)       - script to get information about the installed version of GTK+
gv (1)               - a PostScript and PDF previewer
gxditview (1)        - display gtroff output files
ibm_hosts (5)        - host database for x3270
iceauth (1x)         - ICE authority file utility
ico (1x)             - animate an icosahedron or other polyhedron
imake (1x)           - C preprocessor interface to the make utility
lbxproxy (1x)        - Low BandWidth X proxy
listres (1x)         - list resources in widgets
lndir (1x)           - create a shadow directory of symbolic links to another directory tree
makedepend (1x)      - create dependencies in makefiles
makeg (1x)           - make a debuggable executable
makestrs (1x)        - makes string table C source and header(s)
maze (6)             - an automated X11 demo repeatedly creating and solving a random maze
mkdirhier (1x)       - makes a directory hierarchy
mkfontdir, fonts.dir, fonts.scale, fonts.alias (1x) - create an index of X font files in a directory
oclock (1x)          - round X clock
od-tkdesk (1)        - remotely open a directory using TkDesk
pdftops (1)          - Portable Document Format (PDF) to PostScript converter (version 0.7a)
pdftotext (1)        - Portable Document Format (PDF) to text converter (version 0.7a)
pic2tpic (1)         - Convert pic files to tpic format
proxymngr (1x)       - proxy manager service
rclock (ouR CLOCK) (1) - clock and appointment reminder for X11
reconfig (1x)        - convert old Xconfig to new XF86Config
resize (1x)          - set TERMCAP and terminal settings to current xterm window size
rstart (1x)          - a sample implementation of a Remote Start client
rstartd (1x)         - a sample implementation of a Remote Start rsh helper
rxvt (ouR XVT) a VT102 emulator for the X window system (1) - 
sessreg (1x)         - manage utmp/wtmp entries for non-init clients
setxkbmap (1x)       - set the keyboard using the X Keyboard Extension
showfont (1x)        - font dumper for X font server
showrgb (1x)         - uncompile an rgb color-name database
smproxy (1x)         - Session Manager Proxy
spider (6)           - play double deck solitaire
startx (1x)          - initialize an X session
sxpm (1)             - Show an XPM (X PixMap) file and/or convert XPM 1 or 2 files to XPM 3.
transfig (1)         - creates a makefile for portable LaTeX figures
twm (1x)             - Tab Window Manager for the X Window System
viewres (1x)         - graphical class browser for Xt
x11perf (1x)         - X11 server performance test program
x11perfcomp (1x)     - X11 server performance comparison program
x3270 (1)            - IBM host access tool
x3270if (1)          - command interface to x3270
xapm (1)             - display Advanced Power Management (APM) BIOS information
xauth (1x)           - X authority file utility
xbiff (1x)           - mailbox flag for X
xboard (6)           - X user interface for GNU Chess, Crafty, the Internet Chess Server (ICS), and electronic mail correspondence chess.
xcalc (1x)           - scientific calculator for X
xclipboard (1x)      - X clipboard client
xclock (1x)          - analog / digital clock for X
xcmap (1)            - displays the default colormap on X11 displays
xcmsdb (1x)          - Device Color Characterization utility for X Color Management System
xconsole (1x)        - monitor system console messages with X
xcutsel (1x)         - interchange between cut buffer and selection
xditview (1x)        - display ditroff output
xdm (1x)             - X Display Manager with support for XDMCP, host chooser
xdpyinfo (1x)        - display information utility for X
xedit (1x)           - simple text editor for X
xev (1x)             - print contents of X events
xeyes (1x)           - a follow the mouse X demo
xf86config (1x)      - generate an XF86Config file
xfd (1x)             - display all the characters in an X font
xfig (1)             - Facility for Interactive Generation of figures under X11
xfilemanager (1)     - X11 based Unix filemanager
xfindproxy (1x)      - locate proxy services
xfm (1)              - X file and applications manager
xfontsel (1x)        - point and click selection of X11 font names
xfractint (1)        - fractal generation program
xfs (1x)             - X font server
xfwp (1x)            - X firewall proxy
xgc (1x)             - X graphics demo
xhost (1x)           - server access control program for X
xieperf (1x)         - XIE server extension test and demo program
xinit (1x)           - X Window System initializer
xkbcomp (1x)         - compile XKB keyboard description
xkbevd (1x)          - XKB event daemon
xkbprint (1x)        - print an XKB keyboard description
xkill (1x)           - kill a client by its X resource
xlander (6)          - A lunar landing simulation with a twist
xload (1x)           - system load average display for X
xlock (1)            - Locks the local X display until a password is entered.
xlogo (1x)           - X Window System logo
xlsatoms (1x)        - list interned atoms defined on server
xlsclients (1x)      - list client applications running on a display
xlsfonts (1x)        - server font list displayer for X
xmag (1x)            - magnify parts of the screen
xmahjongg (6)        - X11R3 verion of the solitaire mahjongg game
xman (1x)            - Manual page display program for the X Window System
xmessage (1x)        - display a message or query in a window (X-based /bin/echo)
xmh (1x)             - send and read mail with an X interface to MH
xmkmf (1x)           - create a Makefile from an Imakefile
xmodmap (1x)         - utility for modifying keymaps and pointer button mappings in X
xmseconfig (1x)      - Graphical mouse configuration utility
xon (1x)             - start an X program on a remote machine
xpaint (1)           - Simple Paint program
xpdf (1)             - Portable Document Format (PDF) file viewer for X (version 0.7a)
xpmroot (1)          - Sets the root window of the current X display to an Xpm pixmap
xprop (1x)           - property displayer for X
xrdb (1x)            - X server resource database utility
xrefresh (1x)        - refresh all or part of an X screen
xroach (6)           - cockroaches hide under your windows
xrx (1x)             - RX helper program
xset (1x)            - user preference utility for X
xsetmode (1x)        - set the mode for an X Input device
xsetpointer (1x)     - set an X Input device as the main pointer
xsetroot (1x)        - root window parameter setting utility for X
xsm (1x)             - X Session Manager
xsnow (6)            - create a snowy and Santa-y desktop
xspread (1)          - X Windows spreadsheet
xstdcmap (1x)        - X standard colormap utility
xterm (1x)           - terminal emulator for X
xv (1)               - interactive image display for the X Window System
xvidtune (1x)        - video mode tuner for XFree86
xvier (6)            - a X11 board game.
xvpictoppm (1)       - converts XV 'thumbnail' files to standard PPM format
xwd (1x)             - dump an image of an X window
xwininfo (1x)        - window information utility for X
xwud (1x)            - image displayer for X
xxgdb (1)            - X window system interface to the gdb debugger.
zic2xpm (6)          - Tool to convert ZIICS chess pieces into XBoard (XPM/XIM) pieces.
