Cygwin/X: Update XWin man page

Restructure to group similar options and offer some commentary on those groups
Review option descriptions, clarify and bring up-to-date

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>

1 files changed, 230 insertions, 171 deletions

diff --git a/hw/xwin/XWin.man.pre b/hw/xwin/XWin.man.pre
index 0bad65c60..6b28b51d4 100644
--- a/hw/xwin/XWin.man.pre
+++ b/hw/xwin/XWin.man.pre
@@ -9,83 +9,171 @@ XWin \- X Server for the Cygwin environment on Microsoft Windows
 
 
 .SH DESCRIPTION
-.I XWin is an X Server for the X Window System on the Cygwin environment
+\fIXWin\fP is an X Server for the X Window System on the Cygwin environment
 running on Microsoft Windows.
 
 
 .SH MODES
-\fIXWin\fP can operate in five different and incompatible modes:
+\fIXWin\fP can operate in 3 different modes:
 .br
-* \fISingle Window\fP: This is the default option.  The X server
-appears as a single Windows window and all X windows are contained
-within this window.  This mode requires an external window manager.
-.br
-* \fINo Decoration\fP: This mode is like single window mode except
-that the X server window does not have a title bar or border, thus
-maximizing the amount of space available for X windows within the X
-server window.  This mode requires an external window manager.
-.br
-* \fIFull Screen\fP: This mode is like single window mode except that
-the X server window takes the full screen, covering completely the
-Windows desktop.  This mode requires an external window manager.
-.br
-* \fIRootless\fP: The X server works on a window covering the whole
-screen but the root window (traditionally covered with an X hatch
-pattern) is hidden from view.  This mode requires an external window
-manager.
+* \fISingle Window\fP: This is the default mode.  Each X screen
+appears as a single \fIWindows\fP window and all X windows are contained
+within this window.
+(In X terminology, the \fIWindows\fP window contains the root window for
+the screen)
 .br
 * \fIMulti-Window\fP: In this mode \fIXWin\fP uses its own integrated
 window manager in order to handle the top-level X windows, in such a
-way that they appear as normal Windows windows.
+way that they appear as normal \fIWindows\fP windows.
+.br
+* \fIRootless\fP: In this mode the X server works in a window
+containing the whole screen but this root window (traditionally covered with an X hatch
+pattern) is hidden from view, so only top-level X windows are seen.
+
+.SH OPTIONS
+In addition to the normal server options described in the \fIXserver(1)\fP
+manual page, \fIXWin\fP accepts the following command line switches,
+\fIall\fP of which are optional:
+
+.SH OPTIONS CONTROLLING WINDOWING MODE
+Only one of these options may be specified.
+.TP 8
+.B (default)
+Windowed or rooted mode.
+Each X screen appears as a single \fIWindows\fP window and all X windows are
+contained within those windows.
+.TP 8
+.B \-multiwindow
+Each top-level X window appears in its own \fIWindows\fP window.
+Also start the integrated \fIWindows\fP-based window manager.
+.TP 8
+.B \-rootless
+Run the server in rootless mode.
+The X server works on a window covering the whole screen but the root window
+is hidden from view.
+.TP 8
+.B \-mwextwm
+Experimental.
+The mode combines \fB\-rootless\fP mode drawing with native \fIWindows\fP
+window frames managed by the experimental external window manager \fIxwinwm\fP.
 .PP
-NOTE: \fIMulti-Window\fP mode will crash if an external window manager
-such as \fItwm\fP or \fIfvwm\fP is launched since \fIMulti-Window\fP
-uses its own internal window manager; all other modes require an
-external window manager in order to move, resize, and perform other
+\fBNOTE:\fP \fI-multiwindow\fP mode uses its own internal window manager.
+All other modes require an external window manager in order to move, resize, and perform other
 operations on the individual X windows.
 
+.SH OPTIONS FOR SPECIFYING X SCREENS
+An X display may be composed of multiple screens.
+The default behaviour is to create a single screen 0 that is roughly the
+size of useful area of the primary monitor (allowing for any window
+decorations and the task-bar).
 
-.SH LOG
-As it runs \fIXWin\fP writes messages indicating the most relevant events
-to  the console
-from which it was called and to a log file that by default is located at \fI
-__logdir__/XWin.0.log\fP.  This file is mainly for debugging purposes.
+Screen specific parameters, such as \fB\-fullscreen\fP, can be applied as a
+default to all screens by placing those screen specific parameters
+before any \fB\-screen\fP parameter.  Screen specific parameters placed after
+the first \fB\-screen\fP parameter will apply only to the immediately
+preceeding \fB\-screen\fP parameter.
+.TP 8
+.B \-[no]multimonitors or \-[no]multiplemonitors
+Create a screen 0 that covers all monitors [the primary monitor] on a system with
+multiple monitors.
+This option is currently enabled by default in \fB\-multiwindow\fP mode.
+.TP 8
+.B "\-screen \fIscreen_number\fP [\fIW\fP \fIH\fP [\fIX\fP \fIY\fP] | [[\fIW\fPx\fIH\fP[+\fIX\fP+\fIY\fP]][@\fIM\fP]] ] "
+Create screen number
+.I screen_number
+and optionally specify it's
+.I height,
+.I width
+and
+.I initial position.
+Additionally a
+.I
+monitor number
+(which count from 1) can be specified to place the screen on,
+at which point, all coordinates become relative to that monitor.
+Screen numbers must be contiguous starting from zero and cannot be duplicated.
 
+Examples:
 
-.SH PREFERENCES FILE
-On startup \fIXWin\fP looks for the file \fI$HOME/.XWinrc\fP or, if
-the previous file does not exist, \fI
-__sysconfdir__/X11/system.XWinrc\fP.  \fI.XWinrc\fP allows setting
-preferences for the following:
-.br
-1- To include items into the menu associated with the \fIXWin\fP icon
-which is in the \fIWindows\fP system tray.  This functions in all
-modes that have a tray icon.
-.br
-2- To include items in the menu which is associated with the Windows
-window that \fIXWin -multiwindow\fP produces for each top-level X
-window.  That can be done both for the generic case and for particular
-programs.
-.br
-3- To change the icon that is associated to the Windows window that
-\fIXWin -multiwindow\fP produces for each top-level X-window.  Again,
-that can be done both for the generic case and for particular
-programs.
-.PP
-The format of the \fI.XWinrc\fP file is given in the man page XWinrc(5).
+.I "  -screen 0 @1 ; on 1st monitor using its full resolution (the default)"
 
+.I "  -screen 0 800x600+100+100@2 ; on 2nd monitor offset 100,100 size 800x600"
 
-.SH OPTIONS
-In addition to the normal server options described in the \fIXserver(1)\fP
-manual page, \fIXWin\fP accepts the following command line switches,
-\fIall\fP of which are optional:
+.I "  -screen 0 1024x768@3        ; on 3rd monitor size 1024x768"
+
+.SH OPTIONS CONTROLLING THE APPEARANCE OF THE X SCREEN WINDOWS
+These parameters only apply to windowed mode screens i.e. not
+in \fB-multwindow\fP or \fB-rootless\fP mode
+.TP 8
+.B "\-fullscreen"
+The X server window takes the full screen, covering completely the
+\fIWindows\fP desktop.
+.TP 8
+.B \-nodecoration
+Do not give the Cygwin/X window a \fIWindows\fP window border, title bar,
+etc.
+This parameter is ignored when the \fB\-fullscreen\fP parameter is specified.
+.TP 8
+.B \-scrollbars
+In windowed mode, allow screens bigger than the \fIWindows\fP desktop.
+Moreover, if the window has decorations, one can now resize it.
+This parameter is ignored when the \fB\-fullscreen\fP parameter is specified.
+
+
+.SH OPTIONS CONTROLLING WINDOWS INTEGRATION
 .TP 8
 .B \-[no]clipboard
 Enables [disables] the integration between the Cygwin/X clipboard and
-Windows clipboard.  The default is enabled.
+\fIWindows\fP clipboard.  The default is enabled.
+.TP 8
+.B "\-emulate3buttons [\fItimeout\fP]"
+Emulate a three button mouse; pressing both buttons within
+.I timeout
+milliseconds causes an emulated middle button press.  The default
+.I timeout
+is 50 milliseconds.  Note that most mice with scroll wheel have middle
+button functionality, usually you will need this option only if you have
+a two button mouse without scroll wheel.
+.TP 8
+.B \-[no]keyhook
+Enable [disable] a low-level keyboard hook for catching
+special keypresses like Menu and Alt+Tab and passing them to the X
+Server instead of letting \fIWindows\fP handle them.
+.TP 8
+.B \-lesspointer
+Normally the \fIWindows\fP mouse cursor is hidden when the mouse is
+over an active Cygwin/X window.  This option causes the mouse cursor
+also to be hidden when it is over an inactive Cygwin/X window.  This
+prevents the \fIWindows\fP mouse cursor from being drawn on top of the X
+cursor.
+This parameter has no effect unless \fB-swcursor\fP is also specified.
+.TP 8
+.B \-swcursor
+Disable the usage of the \fIWindows\fP cursor and use the X11 software cursor instead.
+.TP 8
+.B \-[no]trayicon
+Do not create a tray icon.  Default is to create one
+icon per screen.  You can globally disable tray icons with
+\fB\-notrayicon\fP, then enable it for specific screens with
+\fB\-trayicon\fP for those screens.
+.TP 8
+.B \-nounicodeclipboard
+Do not use Unicode clipboard even if on a NT-based platform.
+.TP 8
+.B \-[no]unixkill
+Enable or disable the \fICtrl-Alt-Backspace\fP key combination as a
+signal to exit the X Server.  The \fICtrl-Alt-Backspace\fP key combination
+is disabled by default.
+.TP 8
+.B \-[no]winkill
+Enable or disable the \fIAlt-F4\fP key combination as a signal to exit the
+X Server.
+The \fIAlt-F4\fP key combination is enabled by default.
+
+.SH DRAWING ENGINE OPTIONS
 .TP 8
 .B "\-clipupdates \fInum_boxes\fP"
-Specify an optional threshold, above which the boxes in a shadow
+Specify an optional threshold, above which the regions in a shadow
 update operation will be collected into a GDI clipping region.  The
 clipping region is then used to do a single bit block transfer that is
 constrained to the updated area by the clipping region.  There is some
@@ -94,36 +182,24 @@ the clipping region, thus there may not be much benefit for a small
 number of boxes (less than 10).  It is even possible that this
 functionality does not provide a benefit at any number of boxes; we
 can only determine the usefulness of this feature through testing.
+This option probably has limited effect on current \fIWindows\fP versions
+as they already perform GDI batching.
 This parameter works in conjunction with engines 1, 2, and 4 (Shadow
 GDI, Shadow DirectDraw, and Shadow DirectDraw Non-Locking,
 respectively).
 .TP 8
-.B "\-emulate3buttons \fItimeout\fP"
-Emulate a three button mouse; pressing both buttons within
-.I timeout
-milliseconds causes an emulated middle button press.  The default
-.I timeout
-is 50 milliseconds.  Note that most mice with scroll wheel have middle
-button functionality, usually you will need this option only if you have
-a two button mouse without scroll wheel.
-.TP 8
-.B \-emulatepseudo
-Create a depth 8 PseudoColor visual when running in depths 15, 16, 24,
-or 32, collectively known as TrueColor depths.
- At this date (April 2004) this option is not still operative.
-.TP 8
 .B "\-engine \fIengine_type_id\fP"
 This option, which is intended for Cygwin/X developers,
-overrides the server's automatically supported engine type.  This
+overrides the server's automatically selected engine type.  This
 parameter will be ignored if the specified engine type is not
 supported on the current system.  The supported engine type ids are 1
-- Shadow GDI, 2 - Shadow DirectDraw, and 4 - Shadow DirectDraw4.
-Additionally, there is a barely functional experimental engine type id
-16 - Native GDI.
-.TP 8
-.B "\-fullscreen [-depth \fIdepth\fP] [-refresh \fIrate_in_Hz\fP]"
-Run the server in fullscreen mode, as opposed to the default windowed
-mode.
+- Shadow GDI, 2 - Shadow DirectDraw, and 4 - Shadow DirectDraw Non-Locking.
+Additionally, there are engines with type ids
+8 - Primary DirectDraw (obsolete) and 16 - Native GDI (experimental and barely functional).
+Default behavior is to determine the engine with optimum performance that
+supports the specified depth and window configuration.
+
+.SH FULLSCREEN OPTIONS
 .TP 8
 .B "\-depth \fIdepth\fP"
 Specify the color depth, in bits per pixel, to use when running in
@@ -134,104 +210,37 @@ fullscreen with a DirectDraw engine.  This parameter is ignored if
 Specify an optional refresh rate to use when running in
 fullscreen with a DirectDraw engine.  This parameter is ignored if
 \fB\-fullscreen\fP is not specified.
+
+.SH MISCELLANEOUS OPTIONS
+See also the normal server options described in the \fIXserver(1)\fP
+manual page
+
 .TP 8
 .B \-help
-Write a help text to the console and to the log file.
+Write a help text listing supported command line options and their description to the console.
 .TP 8
 .B \-ignoreinput
 Ignore keyboard and mouse input.  This is usually only used for testing
 and debugging purposes.
 .TP 8
-.B \-[no]keyhook
-Enable [disable] a low-level keyboard hook for catching
-special key combinations like Alt+Tab and passing them to the X
-Server instead of letting \fIWindows\fP handle them.
-.TP 8
-.B \-lesspointer
-Hide the Windows mouse cursor when the mouse is over any Cygwin/X
-window (regardless of whether that window is active or inactive).  This
-prevents the Windows mouse cursor from being placed overtop of the X
-cursor.
-.TP 8
-.B "\-logfile \fIFile_Name\fP"
-Change the log file from the default located at \fI
-__logdir__/XWin.0.log\fP to the one indicated by \fIFile_Name\fP.
+.B "\-logfile \fIfilename\fP"
+Change the server log file from the default of \fI
+__logdir__/XWin.n.log\fP,
+where \fIn\fP is the display number of the XWin server, to \fIfilename\fP.
 .TP 8
 .B "\-logverbose \fIlevel\fP"
 Control the degree of verbosity of the log messages with the integer
 parameter \fIlevel\fP.  For \fIlevel\fP=0 only fatal errors are
-reported, for \fIlevel\fP=1 (default) simple information about
-configuration is also given, for \fIlevel\fP=2 a detailed log
+reported, for \fIlevel\fP=1 simple information about
+configuration is also given, for \fIlevel\fP=2 (default)
+additional runtime information is recorded
+and for \fIlevel\fP=3 detailed log
 information (including trace and debug output) is produced.  Bigger
-values will yield a still more detailed debug output.  At this date
-(April 2004) the option is still not fully operative; the default
-value is 2 and the output is insensitive to the level value.
-.TP 8
-.B \-multimonitors
-Create a root window that covers all monitors on a system with
-multiple monitors.
-.TP 8
-.B \-multiwindow
-Start the integrated \fIWindowsi\fP-based window manager, which launches each
-top-level X window in its own \fIWindows\fP window.  Not to be used together
-with \fB\-rootless\fP nor \fB\-fullscreen\fP.
-.TP 8
-.B \-nodecoration
-Do not give the Cygwin/X window a Windows window border, title bar,
-etc.  This parameter only applies to windowed mode screens, i.e., this
-parameter is ignored when the \fB\-fullscreen\fP parameter is specified.
-.TP 8
-.B \-nounicodeclipboard
-Do not use Unicode clipboard even if NT-based platform.
-.TP 8
-.B \-rootless
-Run the server in rootless mode.  Not to be used with \fB\-multiwindow\fP
-nor with \fB\-fullscreen\fP.
-.TP 8
-.B "\-screen \fIscreen_number\fP \fIwidth\fP \fIheight\fP"
-This parameter may be used to specify the
-.I screen_number,
-.I height,
-and
-.I width
-of one or several Cygwin/X screens; each Cygwin/X screen will be
-opened in its own window.  When using multiple screens, be sure not to
-duplicate any screen numbers.
-.I XWin
-default behavior is to create a single screen that is roughly
-the size of the current Windows display area.
-Screen specific parameters, such as \fB\-fullscreen\fP, can be applied as a
-default to all screens by placing those screen specific parameters
-before any \fB\-screen\fP parameter.  Screen specific parameters placed after
-the first \fB\-screen\fP parameter will apply only to the immediately
-preceeding \fB\-screen\fP parameter.
-.TP 8
-.B \-scrollbars
-In windowed mode, allow screens bigger than the Windows desktop.
-Moreover, if the window has decorations, one can now resize it.
-.TP 8
-.B \-[no]trayicon
-Do not create a tray icon.  Default is to create one
-icon per screen.  You can globally disable tray icons with
-\fB\-notrayicon\fP, then enable it for specific screens with
-\fB\-trayicon\fP for those screens.
-.TP 8
-.B \-[no]unixkill
-Enable or disable the \fICtrl-Alt-Backspace\fP key combination as a
-signal to exit the X Server.  The \fICtrl-Alt-Backspace\fP key combination
-is disabled by default.
-.TP 8
-.B \-[no]winkill
-Enable or disable the \fIAlt-F4\fP key combination as a signal to exit the
-X Server.
-The \fIAlt-F4\fP key combination is enabled by default.
-.TP 8
-.B \-swcursor
-Disable the usage of the windows cursor and use the X11 software cursor instead.
+values will yield a still more detailed debug output.
 .TP 8
 .B \-silent-dup-error
-If another instance of XWin is found running, exit silently and don't display
-the error message.
+If another instance of \fIXWin\fP with the same display number is found running,
+exit silently and don't display any error message.
 .TP 8
 .B "\-xkblayout \fIlayout\fP"
 .TP 8
@@ -251,10 +260,60 @@ in order to load a German layout for a pc105 keyboard one uses
 the options:
 .br
 .I " \-xkblayout de \-xkbmodel pc105"
+
+Alternatively one may use the \fIsetxkbmap\fP program after \fIXWin\fP is
+running.
+
+The default is to select a layout matching your current layout as
+reported by \fIWindows\fP if known, or the default X server layout
+if no matching keyboard layout was found.
+
+.SH UNDOCUMENTED OPTIONS
+These options are undocumented.  Do not use them.
+
+.TP 8
+.B \-emulatepseudo
+Create a depth 8 PseudoColor visual when running in depths 15, 16, 24,
+or 32, collectively known as TrueColor depths.
+Color map manipulation is not supported, so the PseudoColor visual will
+not have the correct colors.
+This option is intended to allow applications which only work with a depth 8
+visual to operate in TrueColor modes.
+.TP 8
+.B \-internalwm
+Run the internal window manager.
+
+.SH LOG FILE
+As it runs \fIXWin\fP writes messages indicating the most relevant events
+to  the console
+from which it was called and to a log file that by default is located at \fI
+__logdir__/XWin.0.log\fP.  This file is mainly for debugging purposes.
+
+
+.SH PREFERENCES FILE
+On startup \fIXWin\fP looks for the file \fI$HOME/.XWinrc\fP or, if
+the previous file does not exist, \fI
+__sysconfdir__/X11/system.XWinrc\fP.  \fI.XWinrc\fP allows setting
+preferences for the following:
+.br
+* To include items into the menu associated with the \fIXWin\fP icon
+which is in the \fIWindows\fP system tray.  This functions in all
+modes that have a tray icon.
+.br
+* To include items in the system menu which is associated with the \fIWindows\fP
+window that \fIXWin -multiwindow\fP produces for each top-level X
+window, in both the generic case and for particular programs.
+.br
+* To change the icon that is associated to the \fIWindows\fP window that
+\fIXWin -multiwindow\fP produces for each top-level X-window.
+.br
+* To change the style that is associated to the \fIWindows\fP window that
+\fXWin I-multiwindow\fP produces for each top-level X window.
 .PP
-Alternatively one may use the \fIsetxkbmap\fP program after XWin is
-running or even the \fIxmodmap\fP program for loading the old-style
-keyboard maps.
+The format of the \fI.XWinrc\fP file is given in the man page XWinrc(5).
+
+.SH EXAMPLES
+Need some examples
 
 
 .SH "SEE ALSO"
@@ -268,10 +327,9 @@ ones are:
 .br
 - The display mode can not be changed once the X server has started.
 .br
-- The XWin software is developing rapidly; it is therefore likely that
+- The \fIXWin\fP software is continuously developing; it is therefore possible that
 this man page is not up to date.  It is always prudent to
-look also at the output of \fIXWin -help\fP and to the Cygwin/X User Guide
-at /usr/share/doc/cygwin-x-doc-x.x.x/ug/cygwin-x-ug.xxx in order to
+look also at the output of \fIXWin -help\fP in order to
 check the options that are operative.
 
 
@@ -282,6 +340,7 @@ Adamson, Michael Bax, Jehan Bing, Lev Bishop, Dr. Peter Busch, Biju G
 C, Robert Collins, Nick Crabtree, Early Ehlinger, Christopher Faylor,
 John Fortin, Brian Genisio, Fabrizio Gennari, Alexander Gottwald, Ralf
 Habacker, Colin Harrison, Matthieu Herrb, Alan Hourihane, Pierre A
-Humblet, Harold L Hunt II, Dakshinamurthy Karra, Kensuke Matsuzaki,
-Takuma Murakami, Earle F. Philhower III, Benjamin Riefenstahl, Suhaib
-Siddiqi, Jack Tanner, and Nicholas Wourms.
+Humblet, Harold L Hunt II, Dakshinamurthy Karra, Joe Krahn,
+Paul Loewenstein, Kensuke Matsuzaki,
+Takuma Murakami, Earle F. Philhower III, Benjamin Riefenstahl, Yaakov Selkowitz,
+Suhaib Siddiqi, Jack Tanner, Jon Turney and Nicholas Wourms.