Provided by: twm_1.0.4-2_i386 bug

NAME

       twm - Tab Window Manager for the X Window System

SYNTAX

       twm [ -display dpy ] [ -s ] [ -f initfile ] [ -v ]

DESCRIPTION

       Twm  is  a  window  manager  for  the  X  Window  System.   It provides
       titlebars, shaped windows, several  forms  of  icon  management,  user-
       defined  macro  functions,  click-to-type  and  pointer-driven keyboard
       focus, and user-specified key and pointer button bindings.

       This program is usually  started  by  the  user’s  session  manager  or
       startup  script.   When  used from xdm(1) or xinit(1) without a session
       manager, twm is frequently executed  in  the  foreground  as  the  last
       client.   When  run  this  way,  exiting  twm  causes the session to be
       terminated (i.e., logged out).

       By default, application windows are surrounded by a  ‘‘frame’’  with  a
       titlebar  at  the  top  and  a  special  border around the window.  The
       titlebar contains the window’s name, a rectangle that is lit  when  the
       window  is  receiving  keyboard  input,  and  function  boxes  known as
       ‘‘titlebuttons’’ at the left and right edges of the titlebar.

       Pressing pointer Button1 (usually the left-most button  unless  it  has
       been  changed  with  xmodmap) on a titlebutton will invoke the function
       associated with the button.  In  the  default  interface,  windows  are
       iconified  by  clicking  (pressing  and then immediately releasing) the
       left titlebutton (which looks like a  Dot).   Conversely,  windows  are
       deiconified  by  clicking  in  the associated icon or entry in the icon
       manager (see description of the variable  ShowIconManager  and  of  the
       function f.showiconmgr).

       Windows  are resized by pressing the right titlebutton (which resembles
       a group of nested squares), dragging the pointer over edge that  is  to
       be  moved,  and releasing the pointer when the outline of the window is
       the desired size.  Similarly, windows are  moved  by  pressing  in  the
       title  or  highlight  region,  dragging  a  window  outline  to the new
       location, and then  releasing  when  the  outline  is  in  the  desired
       position.   Just  clicking  in the title or highlight region raises the
       window without moving it.

       When new windows are created, twm will  honor  any  size  and  location
       information  requested  by  the user (usually through -geometry command
       line  argument  or  resources   for   the   individual   applications).
       Otherwise,  an  outline of the window’s default size, its titlebar, and
       lines dividing the window into a 3x3 grid that track  the  pointer  are
       displayed.   Clicking  pointer  Button1 will position the window at the
       current position and  give  it  the  default  size.   Pressing  pointer
       Button2  (usually  the  middle pointer button) and dragging the outline
       will give the window its current position but allow  the  sides  to  be
       resized  as  described  above.   Clicking  pointer Button3 (usually the
       right pointer button) will give the window  its  current  position  but
       attempt to make it long enough to touch the bottom the screen.

OPTIONS

       Twm accepts the following command line options:

       -display dpy
               This option specifies the X server to use.

       -s      This   option  indicates  that  only  the  default  screen  (as
               specified by -display or by the DISPLAY  environment  variable)
               should  be managed.  By default, twm will attempt to manage all
               screens on the display.

       -f filename
               This option specifies the name of the startup file to use.   By
               default,  twm  will look in the user’s home directory for files
               named .twmrc.num (where num is a screen number) or .twmrc.

       -v      This option indicates that  twm  should  print  error  messages
               whenever  an unexpected X Error event is received.  This can be
               useful when debugging applications but can  be  distracting  in
               regular use.

CUSTOMIZATION

       Much  of twm’s appearance and behavior can be controlled by providing a
       startup file in one of the following locations (searched in  order  for
       each screen being managed when twm begins):

       $HOME/.twmrc.screennumber
               The  screennumber  is a small positive number (e.g. 0, 1, etc.)
               representing the screen number (e.g. the  last  number  in  the
               DISPLAY  environment  variable  host:displaynum.screennum) that
               would be used to contact that screen of the display.   This  is
               intended for displays with multiple screens of differing visual
               types.

       $HOME/.twmrc
               This is the usual name for an individual user’s startup file.

       /usr/lib/X11/twm/system.twmrc
               If neither of the preceding files are found, twm will  look  in
               this  file for a default configuration.  This is often tailored
               by the  site  administrator  to  provide  convenient  menus  or
               familiar bindings for novice users.

       If  no  startup  files  are  found,  twm will use the built-in defaults
       described above.  The only resource used by twm is bitmapFilePath for a
       colon-separated  list  of directories to search when looking for bitmap
       files  (for  more  information,  see  the  Athena  Widgets  manual  and
       xrdb(1)).

       Twm  startup  files  are  logically  broken  up  into  three  types  of
       specifications:  Variables, Bindings,  Menus.   The  Variables  section
       must  come  first  and  is used to describe the fonts, colors, cursors,
       border widths, icon and window  placement,  highlighting,  autoraising,
       layout  of  titles,  warping,  use  of  the icon manager.  The Bindings
       section usually comes second and is used to specify the functions  that
       should  be  to be invoked when keyboard and pointer buttons are pressed
       in windows, icons, titles, and frames.  The  Menus  section  gives  any
       user-defined  menus  (containing functions to be invoked or commands to
       be executed).

       Variable names and keywords  are  case-insensitive.   Strings  must  be
       surrounded  by  double  quote  characters  (e.g.  "blue") and are case-
       sensitive.  A pound sign (#) outside of a string causes  the  remainder
       of  the line in which the character appears to be treated as a comment.

VARIABLES

       Many of the aspects of twm’s user interface are controlled by variables
       that  may  be  set in the user’s startup file.  Some of the options are
       enabled or disabled simply by the presence  of  a  particular  keyword.
       Other  options  require  keywords, numbers, strings, or lists of all of
       these.

       Lists are surrounded by braces and are usually separated by  whitespace
       or a newline.  For example:

            AutoRaise { "emacs" "XTerm" "Xmh" }

       or

            AutoRaise
            {
                 "emacs"
                 "XTerm"
                 "Xmh"
            }

       When  a  variable  containing a list of strings representing windows is
       searched (e.g. to determine whether or not to enable autoraise as shown
       above), a string must be an exact, case-sensitive match to the window’s
       name (given by the WM_NAME window property),  resource  name  or  class
       name  (both  given  by  the  WM_CLASS  window property).  The preceding
       example would enable autoraise on windows named ‘‘emacs’’  as  well  as
       any xterm (since they are of class ‘‘XTerm’’) or xmh windows (which are
       of class ‘‘Xmh’’).

       String arguments that are interpreted as filenames  (see  the  Pixmaps,
       Cursors,  and  IconDirectory  below)  will prepend the user’s directory
       (specified by the HOME environment variable) if the first character  is
       a tilde (~).  If, instead, the first character is a colon (:), the name
       is assumed to refer to one of the internal bitmaps  that  are  used  to
       create the default titlebars symbols:  :xlogo or :delete (both refer to
       the X logo), :dot or :iconify (both refer to  the  dot),  :resize  (the
       nested  squares  used by the resize button), :menu (a page with lines),
       and :question (the question mark used for non-existent bitmap files).

       The following variables may be specified at the top of  a  twm  startup
       file.   Lists  of Window name prefix strings are indicated by win-list.
       Optional arguments are shown in square brackets:

       AutoRaise { win-list }
               This  variable  specifies  a  list  of  windows   that   should
               automatically be raised whenever the pointer enters the window.
               This  action  can  be  interactively  enabled  or  disabled  on
               individual windows using the function f.autoraise.

       AutoRelativeResize
               This variable indicates that dragging out a window size (either
               when initially sizing the window with pointer Button2  or  when
               resizing  it) should not wait until the pointer has crossed the
               window edges.  Instead, moving the pointer automatically causes
               the  nearest  edge  or  edges to move by the same amount.  This
               allows the resizing of windows that extend off the edge of  the
               screen.   If  the pointer is in the center of the window, or if
               the resize is begun by pressing a titlebutton, twm  will  still
               wait  for  the  pointer  to  cross  a  window  edge (to prevent
               accidents).  This option is particularly useful for people  who
               like  the  press-drag-release  method  of  sweeping  out window
               sizes.

       BorderColor string [{ wincolorlist }]
               This variable specifies the default color of the border  to  be
               placed  around all non-iconified windows, and may only be given
               within a Color, Grayscale or  Monochrome  list.   The  optional
               wincolorlist  specifies  a  list of window and color name pairs
               for specifying particular border colors for different types  of
               windows.  For example:

                    BorderColor "gray50"
                    {
                         "XTerm"   "red"
                         "xmh"     "green"
                    }

               The default is "black".

       BorderTileBackground string [{ wincolorlist }]
               This  variable  specifies  the  default background color in the
               gray pattern used in unhighlighted borders (only if NoHighlight
               hasn’t  been  set),  and  may  only  be  given  within a Color,
               Grayscale or Monochrome list.  The optional wincolorlist allows
               per-window colors to be specified.  The default  is "white".

       BorderTileForeground string [{ wincolorlist }]
               This  variable  specifies  the  default foreground color in the
               gray pattern used in unhighlighted borders (only if NoHighlight
               hasn’t  been  set),  and  may  only  be  given  within a Color,
               Grayscale or Monochrome list.  The optional wincolorlist allows
               per-window colors to be specified.  The default is "black".

       BorderWidth pixels
               This  variable  specifies  the  width  in  pixels of the border
               surrounding all client window frames if  ClientBorderWidth  has
               not  been specified.  This value is also used to set the border
               size of windows created by twm (such as the icon manager).  The
               default is 2.

       ButtonIndent pixels
               This variable specifies the amount by which titlebuttons should
               be indented on all sides.  Positive values cause the buttons to
               be smaller than the window text and highlight area so that they
               stand  out.   Setting  this  and   the   TitleButtonBorderWidth
               variables  to  0  makes  titlebuttons  be  as  tall and wide as
               possible.  The default is 1.

       ClientBorderWidth
               This variable indicates that border width of a  window’s  frame
               should be set to the initial border width of the window, rather
               than to the value of BorderWidth.

       Color { colors-list }
               This variable specifies a list of color assignments to be  made
               if  the  default  display  is  capable  of displaying more than
               simple black and white.  The colors-list  is  made  up  of  the
               following  color variables and their values: DefaultBackground,
               DefaultForeground,       MenuBackground,        MenuForeground,
               MenuTitleBackground,    MenuTitleForeground,   MenuShadowColor,
               MenuBorderColor, PointerForeground, and PointerBackground.  The
               following  color  variables  may also be given a list of window
               and color name pairs to allow per-window colors to be specified
               (see      BorderColor      for      details):      BorderColor,
               IconManagerHighlight,                    BorderTitleBackground,
               BorderTitleForeground,     TitleBackground,    TitleForeground,
               IconBackground,        IconForeground,         IconBorderColor,
               IconManagerBackground, and IconManagerForeground.  For example:

                    Color
                    {
                         MenuBackground      "gray50"
                         MenuForeground      "blue"
                         BorderColor              "red" { "XTerm" "yellow" }
                         TitleForeground          "yellow"
                         TitleBackground          "blue"
                    }

               All of these color variables may  also  be  specified  for  the
               Monochrome  variable,  allowing the same initialization file to
               be used on both color and monochrome displays.

       ConstrainedMoveTime milliseconds
               This variable specifies  the  length  of  time  between  button
               clicks  needed  to  begin a constrained move operation.  Double
               clicking within this amount of time when invoking  f.move  will
               cause  the  window to be moved only in a horizontal or vertical
               direction.  Setting this value to 0  will  disable  constrained
               moves.  The default is 400 milliseconds.

       Cursors { cursor-list }
               This  variable  specifies  the  glyphs  that twm should use for
               various pointer cursors.  Each cursor  may  be  defined  either
               from the cursor font or from two bitmap files.  Shapes from the
               cursor font may be specified directly as:

                         cursorname     "string"

               where cursorname is one of the cursor names listed  below,  and
               string   is   the  name  of  a  glyph  as  found  in  the  file
               /usr/include/X11/cursorfont.h (without the ‘‘XC_’’ prefix).  If
               the  cursor  is  to be defined from bitmap files, the following
               syntax is used instead:

                         cursorname     "image"   "mask"

               The  image  and  mask  strings  specify  the  names  of   files
               containing  the  glyph  image  and mask in bitmap(1) form.  The
               bitmap files are located in the  same  manner  as  icon  bitmap
               files.    The   following  example  shows  the  default  cursor
               definitions:

                    Cursors
                    {
                         Frame          "top_left_arrow"
                         Title          "top_left_arrow"
                         Icon      "top_left_arrow"
                         IconMgr   "top_left_arrow"
                         Move      "fleur"
                         Resize         "fleur"
                         Menu      "sb_left_arrow"
                         Button         "hand2"
                         Wait      "watch"
                         Select         "dot"
                         Destroy   "pirate"
                    }

       DecorateTransients
               This  variable  indicates   that   transient   windows   (those
               containing  a WM_TRANSIENT_FOR property) should have titlebars.
               By default, transients are not reparented.

       DefaultBackground string
               This variable specifies the background color  to  be  used  for
               sizing and information windows.  The default is "white".

       DefaultForeground string
               This  variable  specifies  the  foreground color to be used for
               sizing and information windows.  The default is "black".

       DontIconifyByUnmapping { win-list }
               This variable specifies a list of windows that  should  not  be
               iconified  by simply unmapping the window (as would be the case
               if IconifyByUnmapping had been set).  This is  frequently  used
               to  force  some  windows  to  be  treated  as icons while other
               windows are handled by the icon manager.

       DontMoveOff
               This variable indicates that windows should not be  allowed  to
               be  moved  off  the  screen.   It  can  be  overridden  by  the
               f.forcemove function.

       DontSqueezeTitle [{ win-list }]
               This variable indicates that titlebars should not  be  squeezed
               to  their  minimum  size as described under SqueezeTitle below.
               If the optional window list is  supplied,  only  those  windows
               will be prevented from being squeezed.

       ForceIcons
               This  variable  indicates  that  icon  pixmaps specified in the
               Icons variable should override any client-supplied pixmaps.

       FramePadding pixels
               This variable  specifies  the  distance  between  the  titlebar
               decorations  (the  button  and text) and the window frame.  The
               default is 2 pixels.

       Grayscale { colors }
               This variable specifies a list of color assignments that should
               be  made if the screen has a GrayScale default visual.  See the
               description of Colors.

       IconBackground string [{ win-list }]
               This variable specifies the background color of icons, and  may
               only  be  specified  inside of a Color, Grayscale or Monochrome
               list.  The optional win-list is a  list  of  window  names  and
               colors  so  that  per-window  colors may be specified.  See the
               BorderColor variable for a complete  description  of  the  win-
               list.  The default is "white".

       IconBorderColor string [{ win-list }]
               This  variable  specifies the color of the border used for icon
               windows, and may only be specified inside of a Color, Grayscale
               or  Monochrome list.  The optional win-list is a list of window
               names and colors so that per-window colors  may  be  specified.
               See  the BorderColor variable for a complete description of the
               win-list.  The default is "black".

       IconBorderWidth pixels
               This variable specifies the  width  in  pixels  of  the  border
               surrounding icon windows.  The default is 2.

       IconDirectory string
               This  variable  specifies the directory that should be searched
               if if a bitmap file cannot be found in any of  the  directories
               in the bitmapFilePath resource.

       IconFont string
               This  variable  specifies  the  font to be used to display icon
               names within icons.  The default is "variable".

       IconForeground string [{ win-list }]
               This variable specifies the foreground color to  be  used  when
               displaying  icons, and may only be specified inside of a Color,
               Grayscale or Monochrome list.  The optional win-list is a  list
               of  window  names  and  colors so that per-window colors may be
               specified.   See  the  BorderColor  variable  for  a   complete
               description of the win-list.  The default is "black".

       IconifyByUnmapping [{ win-list }]
               This  variable  indicates  that  windows should be iconified by
               being unmapped without trying to map any icons.   This  assumes
               that  the  user will remap the window through the icon manager,
               the f.warpto function, or the TwmWindows menu.  If the optional
               win-list  is  provided, only those windows will be iconified by
               simply  unmapping.   Windows  that  have  both  this  and   the
               IconManagerDontShow  options  set  may  not be accessible if no
               binding to the TwmWindows menu is set  in  the  user’s  startup
               file.

       IconManagerBackground string [{ win-list }]
               This  variable  specifies  the background color to use for icon
               manager entries, and may only be specified inside of  a  Color,
               Grayscale  or Monochrome list.  The optional win-list is a list
               of window names and colors so that  per-window  colors  may  be
               specified.    See  the  BorderColor  variable  for  a  complete
               description of the win-list.  The default is "white".

       IconManagerDontShow [{ win-list }]
               This variable  indicates  that  the  icon  manager  should  not
               display  any  windows.  If the optional win-list is given, only
               those windows will not be displayed.  This variable is used  to
               prevent  windows  that  are rarely iconified (such as xclock or
               xload) from taking up space in the icon manager.

       IconManagerFont string
               This variable specifies the font to  be  used  when  displaying
               icon manager entries.  The default is "variable".

       IconManagerForeground string [{ win-list }]
               This  variable  specifies  the foreground color to be used when
               displaying icon manager entries,  and  may  only  be  specified
               inside  of a Color, Grayscale or Monochrome list.  The optional
               win-list is a list of window names  and  colors  so  that  per-
               window  colors  may be specified.  See the BorderColor variable
               for a complete description of the  win-list.   The  default  is
               "black".

       IconManagerGeometry string [ columns ]
               This  variable  specifies  the  geometry  of  the  icon manager
               window.  The string argument is standard geometry specification
               that  indicates the initial full size of the icon manager.  The
               icon manager window is then  broken  into  columns  pieces  and
               scaled  according to the number of entries in the icon manager.
               Extra entries are wrapped to form additional rows.  The default
               number of columns is 1.

       IconManagerHighlight string [{ win-list }]
               This  variable  specifies  the  border  color  to  be used when
               highlighting the icon manager  entry  that  currently  has  the
               focus,  and  can only be specified inside of a Color, Grayscale
               or Monochrome list.  The optional win-list is a list of  window
               names  and  colors  so that per-window colors may be specified.
               See the BorderColor variable for a complete description of  the
               win-list.  The default is "black".

       IconManagers { iconmgr-list }
               This  variable  specifies  a  list  of icon managers to create.
               Each item in the iconmgr-list has the following format:

                         "winname" ["iconname"]   "geometry" columns

               where winname is the name of the windows  that  should  be  put
               into  this  icon  manager,  iconname  is  the name of that icon
               manager  window’s  icon,  geometry  is  a   standard   geometry
               specification,  and  columns  is  the number of columns in this
               icon manager as described in IconManagerGeometry.  For example:

                    IconManagers
                    {
                         "XTerm"   "=300x5+800+5" 5
                         "myhost"  "=400x5+100+5" 2
                    }

               Clients  whose  name  or  class is ‘‘XTerm’’ will have an entry
               created in the ‘‘XTerm’’ icon manager.  Clients whose name  was
               ‘‘myhost’’ would be put into the ‘‘myhost’’ icon manager.

       IconManagerShow { win-list }
               This variable specifies a list of windows that should appear in
               the  icon  manager.   When  used  in   conjunction   with   the
               IconManagerDontShow  variable,  only  the  windows in this list
               will be shown in the icon manager.

       IconRegion geomstring vgrav hgrav gridwidth gridheight
               This variable specifies an area on the  root  window  in  which
               icons  are  placed  if no specific icon location is provided by
               the client.  The geomstring is a  quoted  string  containing  a
               standard  geometry  specification.  If more than one IconRegion
               lines are given, icons will be put  into  the  succeeding  icon
               regions  when  the first is full.  The vgrav argument should be
               either North or South  and  control  and  is  used  to  control
               whether icons are first filled in from the top or bottom of the
               icon region.  Similarly, the hgrav argument  should  be  either
               East  or  West  and  is used to control whether icons should be
               filled in from left from the right.  Icons are laid out  within
               the  region  in  a  grid  with  cells gridwidth pixels wide and
               gridheight pixels high.

       Icons { win-list }
               This variable specifies a list of window names and  the  bitmap
               filenames that should be used as their icons.  For example:

                    Icons
                    {
                         "XTerm"   "xterm.icon"
                         "xfd"          "xfd_icon"
                    }

               Windows  that  match  ‘‘XTerm’’  and  would not be iconified by
               unmapping, and would try to use the icon  bitmap  in  the  file
               ‘‘xterm.icon’’.   If  ForceIcons is specified, this bitmap will
               be used even if the client has requested its own icon pixmap.

       InterpolateMenuColors
               This variable  indicates  that  menu  entry  colors  should  be
               interpolated  between  entry  specified colors.  In the example
               below:

                    Menu "mymenu"
                    {
                         "Title"        ("black":"red")          f.title
                         "entry1"                 f.nop
                         "entry2"                 f.nop
                         "entry3"  ("white":"green")   f.nop
                         "entry4"                 f.nop
                         "entry5"  ("red":"white")          f.nop
                    }

               the foreground colors for ‘‘entry1’’  and  ‘‘entry2’’  will  be
               interpolated between black and white, and the background colors
               between  red  and  green.   Similarly,   the   foreground   for
               ‘‘entry4’’  will  be  half-way  between  white and red, and the
               background will be half-way between green and white.

       MakeTitle { win-list }
               This variable specifies a list of windows on which  a  titlebar
               should  be  placed  and  is  used to request titles on specific
               windows when NoTitle has been set.

       MaxWindowSize string
               This variable specifies a  geometry  in  which  the  width  and
               height  give  the  maximum  size  for  a given window.  This is
               typically used to restrict windows to the size of  the  screen.
               The  default width is 32767 - screen width.  The default height
               is 32767 - screen height.

       MenuBackground string
               This variable specifies the background color  used  for  menus,
               and can only be specified inside of a Color or Monochrome list.
               The default is "white".

       MenuBorderColor string
               This variable specifies the color of the menu  border  and  can
               only  be  specified  inside of a Color, Grayscale or Monochrome
               list.  The default is "black".

       MenuBorderWidth pixels
               This variable specifies the  width  in  pixels  of  the  border
               surrounding menu windows.  The default is 2.

       MenuFont string
               This  variable specifies the font to use when displaying menus.
               The default is "variable".

       MenuForeground string
               This variable specifies the foreground color  used  for  menus,
               and  can  only  be  specified  inside  of a Color, Grayscale or
               Monochrome list.  The default is "black".

       MenuShadowColor string
               This variable specifies the color of the  shadow  behind  pull-
               down  menus  and  can  only  be  specified  inside  of a Color,
               Grayscale or Monochrome list.  The default is "black".

       MenuTitleBackground string
               This  variable  specifies  the  background  color  for  f.title
               entries  in menus, and can only be specified inside of a Color,
               Grayscale or Monochrome list.  The default is "white".

       MenuTitleForeground string
               This  variable  specifies  the  foreground  color  for  f.title
               entries in menus and can only be specified inside of a Color or
               Monochrome list.  The default is "black".

       Monochrome { colors }
               This variable specifies a list of color assignments that should
               be made if the screen has a depth of 1.  See the description of
               Colors.

       MoveDelta pixels
               This variable specifies the number of pixels the  pointer  must
               move  before  the f.move function starts working.  Also see the
               f.deltastop function.  The default is zero pixels.

       NoBackingStore
               This variable indicates that twm’s  menus  should  not  request
               backing  store  to  minimize  repainting  of  menus.   This  is
               typically used with servers that can repaint faster  than  they
               can handle backing store.

       NoCaseSensitive
               This  variable  indicates  that  case  should  be  ignored when
               sorting  icon  names  in  an  icon  manager.   This  option  is
               typically  used  with  applications  that  capitalize the first
               letter of their icon name.

       NoDefaults
               This variable indicates that twm should not supply the  default
               titlebuttons  and bindings.  This option should only be used if
               the startup file contains a completely new set of bindings  and
               definitions.

       NoGrabServer
               This  variable  indicates  that  twm should not grab the server
               when popping up menus and moving opaque windows.

       NoHighlight [{ win-list }]
               This variable indicates that borders should not be  highlighted
               to track the location of the pointer.  If the optional win-list
               is given, highlighting will only be disabled for those windows.
               When the border is highlighted, it will be drawn in the current
               BorderColor.  When the border is not highlighted,  it  will  be
               stippled    with    a    gray   pattern   using   the   current
               BorderTileForeground and BorderTileBackground colors.

       NoIconManagers
               This variable indicates that no icon manager should be created.

       NoMenuShadows
               This variable indicates that menus should not have drop shadows
               drawn behind them.  This is typically used with slower  servers
               since  it  speeds  up menu drawing at the expense of making the
               menu slightly harder to read.

       NoRaiseOnDeiconify
               This variable  indicates  that  windows  that  are  deiconified
               should not be raised.

       NoRaiseOnMove
               This  variable indicates that windows should not be raised when
               moved.  This is  typically  used  to  allow  windows  to  slide
               underneath each other.

       NoRaiseOnResize
               This  variable indicates that windows should not be raised when
               resized.  This is typically used to allow windows to be resized
               underneath each other.

       NoRaiseOnWarp
               This  variable indicates that windows should not be raised when
               the pointer is warped into them with the f.warpto function.  If
               this option is set, warping to an occluded window may result in
               the pointer ending up  in  the  occluding  window  instead  the
               desired   window   (which   causes   unexpected  behavior  with
               f.warpring).

       NoSaveUnders
               This variable indicates that menus  should  not  request  save-
               unders  to minimize window repainting following menu selection.
               It is typically used with displays that can repaint faster than
               they can handle save-unders.

       NoStackMode [{ win-list }]
               This  variable  indicates that client window requests to change
               stacking order should be ignored.  If the optional win-list  is
               given, only requests on those windows will be ignored.  This is
               typically  used  to  prevent  applications  from   relentlessly
               popping themselves to the front of the window stack.

       NoTitle [{ win-list }]
               This variable indicates that windows should not have titlebars.
               If the optional win-list is given, only those windows will  not
               have  titlebars.   MakeTitle  may  be  used with this option to
               force titlebars to be put on specific windows.

       NoTitleFocus
               This variable indicates that twm should not set keyboard  input
               focus  to each window as it is entered.  Normally, twm sets the
               focus so that focus and key events from the titlebar  and  icon
               managers  are  delivered to the application.  If the pointer is
               moved quickly and twm is slow to respond, input can be directed
               to the old window instead of the new.  This option is typically
               used to prevent this ‘‘input lag’’ and to work around  bugs  in
               older applications that have problems with focus events.

       NoTitleHighlight [{ win-list }]
               This   variable  indicates  that  the  highlight  area  of  the
               titlebar, which is used to indicate the window  that  currently
               has  the input focus, should not be displayed.  If the optional
               win-list is given, only those windows will not  have  highlight
               areas.   This  and  the  SqueezeTitle  options  can  be  set to
               substantially reduce the amount of  screen  space  required  by
               titlebars.

       OpaqueMove
               This   variable  indicates  that  the  f.move  function  should
               actually move the window instead of just an outline so that the
               user  can immediately see what the window will look like in the
               new position.  This option is typically used on  fast  displays
               (particularly if NoGrabServer is set).

       Pixmaps { pixmaps }
               This  variable  specifies  a  list  of  pixmaps that define the
               appearance  of  various  images.   Each  entry  is  a   keyword
               indicating  the  pixmap to set, followed by a string giving the
               name  of  the  bitmap  file.   The  following  pixmaps  may  be
               specified:

                    Pixmaps
                    {
                         TitleHighlight "gray1"
                    }

               The  default  for  TitleHighlight  is  to  use  an even stipple
               pattern.

       Priority priority
               This variable sets  twm’s  priority.   priority  should  be  an
               unquoted,  signed  number  (e.g.  999).   This  variable has an
               effect only if the server supports the SYNC extension.

       RandomPlacement
               This variable indicates that windows with no specified geometry
               should  be placed in a pseudo-random location instead of having
               the user drag out an outline.

       ResizeFont string
               This variable  specifies  the  font  to  be  used  for  in  the
               dimensions  window  when  resizing  windows.   The  default  is
               "fixed".

       RestartPreviousState
               This variable indicates that twm  should  attempt  to  use  the
               WM_STATE  property  on  client  windows  to  tell which windows
               should be iconified and which should be left visible.  This  is
               typically  used  to try to regenerate the state that the screen
               was in before the previous window manager was shutdown.

       SaveColor { colors-list }
               This variable indicates a  list  of  color  assignments  to  be
               stored   as   pixel   values   in   the  root  window  property
               _MIT_PRIORITY_COLORS.  Clients  may  elect  to  preserve  these
               values  when  installing  their own colormap.  Note that use of
               this mechanism is  a  way  an  for  application  to  avoid  the
               "technicolor"  problem,  whereby  useful screen objects such as
               window borders and titlebars disappear when a  programs  custom
               colors are installed by the window manager.  For example:

                    SaveColor
                    {
                            BorderColor
                            TitleBackground
                            TitleForeground
                            "red"
                            "green"
                            "blue"
                    }

               This  would place on the root window 3 pixel values for borders
               and titlebars, as well as the three color  strings,  all  taken
               from the default colormap.

       ShowIconManager
               This  variable indicates that the icon manager window should be
               displayed when twm is started.  It can  always  be  brought  up
               using the f.showiconmgr function.

       SortIconManager
               This variable indicates that entries in the icon manager should
               be sorted alphabetically rather than by  simply  appending  new
               windows to the end.

       SqueezeTitle [{ squeeze-list }]
               This  variable  indicates  that  twm  should attempt to use the
               SHAPE extension to make titlebars occupy only  as  much  screen
               space  as  they  need, rather than extending all the way across
               the top of the window.  The optional squeeze-list may  be  used
               to  control the location of the squeezed titlebar along the top
               of the window.  It contains entries of the form:

                         "name"         justification  num  denom

               where name is a window  name,  justification  is  either  left,
               center,  or  right,  and num and denom are numbers specifying a
               ratio giving the relative position about which the titlebar  is
               justified.   The  ratio  is  measured from left to right if the
               numerator is positive,  and  right  to  left  if  negative.   A
               denominator  of  0  indicates  that  the  numerator  should  be
               measured in pixels.  For convenience, the ratio 0/0 is the same
               as 1/2 for center and -1/1 for right.  For example:

                    SqueezeTitle
                    {
                         "XTerm"   left      0    0
                         "xterm1"  left      1    3
                         "xterm2"  left      2    3
                         "oclock"  center         0    0
                         "emacs"   right          0    0
                    }

               The  DontSqueezeTitle list can be used to turn off squeezing on
               certain titles.

       StartIconified [{ win-list }]
               This variable indicates that client windows should initially be
               left as icons until explicitly deiconified by the user.  If the
               optional win-list is given, only those windows will be  started
               iconic.   This  is  useful  for programs that do not support an
               -iconic command line option or resource.

       TitleBackground string [{ win-list }]
               This variable specifies the background color used in titlebars,
               and  may  only  be  specified  inside  of a Color, Grayscale or
               Monochrome list.  The optional win-list is  a  list  of  window
               names  and  colors  so that per-window colors may be specified.
               The default is "white".

       TitleButtonBorderWidth pixels
               This variable specifies the  width  in  pixels  of  the  border
               surrounding  titlebuttons.  This is typically set to 0 to allow
               titlebuttons to take up as much space as possible  and  to  not
               have a border.  The default is 1.

       TitleFont string
               This  variable  specifies  the  font  to be used for displaying
               window names in titlebars.  The default is "variable".

       TitleForeground string [{ win-list }]
               This variable specifies the foreground color used in titlebars,
               and  may  only  be  specified  inside  of a Color, Grayscale or
               Monochrome list.  The optional win-list is  a  list  of  window
               names  and  colors  so that per-window colors may be specified.
               The default is "black".

       TitlePadding pixels
               This  variable  specifies  the  distance  between  the  various
               buttons,  text,  and  highlight  areas  in  the  titlebar.  The
               default is 8 pixels.

       UnknownIcon string
               This variable specifies the filename of a  bitmap  file  to  be
               used as the default icon.  This bitmap will be used as the icon
               of all clients which do not provide an icon bitmap and are  not
               listed in the Icons list.

       UsePPosition string
               This  variable  specifies  whether  or  not  twm  should  honor
               program-requested locations (given by the PPosition flag in the
               WM_NORMAL_HINTS  property)  in  the absence of a user-specified
               position.  The argument string may have one  of  three  values:
               "off"  (the  default)  indicating  that  twm  should ignore the
               program-supplied position, "on" indicating  that  the  position
               should  be  used,  and  "non-zero" indicating that the position
               should used if it is other than (0,0).  The  latter  option  is
               for working around a bug in older toolkits.

       WarpCursor [{ win-list }]
               This  variable indicates that the pointer should be warped into
               windows when they are deiconified.  If the optional win-list is
               given,  the  pointer will only be warped when those windows are
               deiconified.

       WindowRing { win-list }
               This variable specifies a  list  of  windows  along  which  the
               f.warpring function cycles.

       WarpUnmapped
               This  variable  indicates  that  the  f.warpto  function should
               deiconify  any  iconified  windows  it  encounters.   This   is
               typically used to make a key binding that will pop a particular
               window (such as xmh), no matter where it is.   The  default  is
               for f.warpto to ignore iconified windows.

       XorValue number
               This  variable  specifies  the value to use when drawing window
               outlines for moving and resizing.  This  should  be  set  to  a
               value  that  will  result  in  a  variety of of distinguishable
               colors when exclusive-or’ed with the  contents  of  the  user’s
               typical  screen.   Setting  this variable to 1 often gives nice
               results  if  adjacent  colors  in  the  default  colormap   are
               distinct.   By  default,  twm  will  attempt to cause temporary
               lines to appear at the opposite end of the  colormap  from  the
               graphics.

       Zoom [ count ]
               This  variable indicates that outlines suggesting movement of a
               window to and from its  iconified  state  should  be  displayed
               whenever  a  window  is iconified or deiconified.  The optional
               count argument specifies the number of outlines  to  be  drawn.
               The default count is 8.

       The following variables must be set after the fonts have been assigned,
       so it is usually best to put them  at  the  end  of  the  variables  or
       beginning of the bindings sections:

       DefaultFunction function
               This  variable specifies the function to be executed when a key
               or button event is received for which no binding  is  provided.
               This  is typically bound to f.nop, f.beep, or a menu containing
               window operations.

       WindowFunction function
               This variable specifies the function to execute when  a  window
               is  selected from the TwmWindows menu.  If this variable is not
               set, the window will be deiconified and raised.

BINDINGS

       After the desired variables have been set, functions  may  be  attached
       titlebuttons  and  key  and pointer buttons.  Titlebuttons may be added
       from the left or right side and appear in the  titlebar  from  left-to-
       right  according  to  the  order  in which they are specified.  Key and
       pointer button bindings may be given in any order.

       Titlebuttons specifications must include the name of the pixmap to  use
       in  the button box and the function to be invoked when a pointer button
       is pressed within them:

            LeftTitleButton "bitmapname"  = function

       or

            RightTitleButton "bitmapname" = function

       The bitmapname may refer to one of the   built-in  bitmaps  (which  are
       scaled to match TitleFont) by using the appropriate colon-prefixed name
       described above.

       Key and pointer button specifications must give the modifiers that must
       be  pressed,  over  which  parts of the screen the pointer must be, and
       what function is to be invoked.  Keys are given as  strings  containing
       the  appropriate  keysym  name;  buttons  are  given  as  the  keywords
       Button1-Button5:

            "FP1"          = modlist : context : function
            Button1   = modlist : context : function

       The modlist is any combination of the modifier  names  shift,  control,
       lock,  meta,  mod1, mod2, mod3, mod4, or mod5 (which may be abbreviated
       as s, c, l, m, m1,  m2,  m3,  m4,  m5,  respectively)  separated  by  a
       vertical bar (|).  Similarly, the context is any combination of window,
       title,  icon,  root,  frame,  iconmgr,  their  first  letters  (iconmgr
       abbreviation  is m), or all, separated by a vertical bar.  The function
       is any of the f.  keywords described below.  For example,  the  default
       startup file contains the following bindings:

            Button1   =    : root         : f.menu "TwmWindows"
            Button1   = m  : window | icon     : f.function "move-or-lower"
            Button2   = m  : window | icon     : f.iconify
            Button3   = m  : window | icon     : f.function "move-or-raise"
            Button1   =    : title        : f.function "move-or-raise"
            Button2   =    : title        : f.raiselower
            Button1   =    : icon         : f.function "move-or-iconify"
            Button2   =    : icon         : f.iconify
            Button1   =    : iconmgr : f.iconify
            Button2   =    : iconmgr : f.iconify

       A  user  who  wanted to be able to manipulate windows from the keyboard
       could use the following bindings:

            "F1" =    : all          : f.iconify
            "F2" =    : all          : f.raiselower
            "F3" =    : all          : f.warpring "next"
            "F4" =    : all          : f.warpto "xmh"
            "F5" =    : all          : f.warpto "emacs"
            "F6" =    : all          : f.colormap "next"
            "F7" =    : all          : f.colormap "default"
            "F20"     =    : all          : f.warptoscreen "next"
            "Left"    = m  : all          : f.backiconmgr
            "Right"   = m | s   : all          : f.forwiconmgr
            "Up" = m  : all          : f.upiconmgr
            "Down"    = m | s   : all          : f.downiconmgr

       Twm provides many more  window  manipulation  primitives  than  can  be
       conveniently  stored  in  a  titlebar,  menu,  or  set of key bindings.
       Although a small set of defaults are supplied (unless the NoDefaults is
       specified),  most  users will want to have their most common operations
       bound to key and button strokes.  To do this, twm associates names with
       each of the primitives and provides user-defined functions for building
       higher level primitives and menus  for  interactively  selecting  among
       groups of functions.

       User-defined functions contain the name by which they are referenced in
       calls to f.function and a list of  other  functions  to  execute.   For
       example:

            Function "move-or-lower" { f.move f.deltastop f.lower }
            Function "move-or-raise" { f.move f.deltastop f.raise }
            Function "move-or-iconify"    { f.move f.deltastop f.iconify }
            Function "restore-colormap"   { f.colormap "default" f.lower }

       The  function  name must be used in f.function exactly as it appears in
       the function specification.

       In the descriptions below, if the function is said to  operate  on  the
       selected  window,  but  is invoked from a root menu, the cursor will be
       changed to the Select cursor and the next window to  receive  a  button
       press will be chosen:

       ! string
               This is an abbreviation for f.exec string.

       f.autoraise
               This  function  toggles  whether  or not the selected window is
               raised whenever entered by the pointer.  See the description of
               the variable AutoRaise.

       f.backiconmgr
               This  function  warps the pointer to the previous column in the
               current icon manager, wrapping back  to  the  previous  row  if
               necessary.

       f.beep  This function sounds the keyboard bell.

       f.bottomzoom
               This  function  is  similar  to  the  f.fullzoom  function, but
               resizes the window to fill only the bottom half of the  screen.

       f.circledown
               This  function lowers the top-most window that occludes another
               window.

       f.circleup
               This function raises the bottom-most window that is occluded by
               another window.

       f.colormap string
               This   function   rotates  the  colormaps  (obtained  from  the
               WM_COLORMAP_WINDOWS property  on  the  window)  that  twm  will
               display  when  the  pointer  is  in  this window.  The argument
               string may have one of the following  values:  "next",  "prev",
               and  "default".   It  should be noted here that in general, the
               installed colormap is determined by keyboard focus.  A  pointer
               driven  keyboard  focus  will  install  a private colormap upon
               entry of the window owning the colormap.  Using  the  click  to
               type  model,  private colormaps will not be installed until the
               user presses a mouse button on the target window.

       f.deiconify
               This function deiconifies the selected window.  If  the  window
               is not an icon, this function does nothing.

       f.delete
               This   function  sends  the  WM_DELETE_WINDOW  message  to  the
               selected window if the  client  application  has  requested  it
               through  the  WM_PROTOCOLS window property.  The application is
               supposed to respond to the message by  removing  the  indicated
               window.   If  the  window  has  not  requested WM_DELETE_WINDOW
               messages, the keyboard bell will be rung  indicating  that  the
               user  should  choose  an alternative method.  Note this is very
               different from f.destroy.  The  intent  here  is  to  delete  a
               single window,  not necessarily the entire application.

       f.deltastop
               This  function  allows a user-defined function to be aborted if
               the pointer has been moved more than MoveDelta pixels.  See the
               example  definition  given  for Function "move-or-raise" at the
               beginning of the section.

       f.destroy
               This function instructs the  X  server  to  close  the  display
               connection  of  the  client  that  created the selected window.
               This should only be used as a last  resort  for  shutting  down
               runaway clients.  See also f.delete.

       f.downiconmgr
               This  function warps the pointer to the next row in the current
               icon manger, wrapping to the beginning of the  next  column  if
               necessary.

       f.exec string
               This  function  passes  the  argument  string  to  /bin/sh  for
               execution.  In multiscreen mode,  if  string  starts  a  new  X
               client  without  giving  a  display  argument,  the client will
               appear on the screen from which this function was invoked.

       f.focus This function toggles the keyboard focus of the server  to  the
               selected window, changing the focus rule from pointer-driven if
               necessary.  If the selected window already  was  focused,  this
               function executes an f.unfocus.

       f.forcemove
               This  function  is  like  f.move  except  that  it  ignores the
               DontMoveOff variable.

       f.forwiconmgr
               This function warps the pointer  to  the  next  column  in  the
               current icon manager, wrapping to the beginning of the next row
               if necessary.

       f.fullzoom
               This function resizes the selected window to the full  size  of
               the  display  or  else restores the original size if the window
               was already zoomed.

       f.function string
               This function executes the user-defined function whose name  is
               specified by the argument string.

       f.hbzoom
               This function is a synonym for f.bottomzoom.

       f.hideiconmgr
               This function unmaps the current icon manager.

       f.horizoom
               This variable is similar to the f.zoom function except that the
               selected window is resized to the full width of the display.

       f.htzoom
               This function is a synonym for f.topzoom.

       f.hzoom This function is a synonym for f.horizoom.

       f.iconify
               This function iconifies or deiconifies the selected  window  or
               icon, respectively.

       f.identify
               This  function  displays  a summary of the name and geometry of
               the  selected  window.   If  the  server  supports   the   SYNC
               extension, the priority of the client owning the window is also
               displayed.  Clicking the pointer  or  pressing  a  key  in  the
               window will dismiss it.

       f.lefticonmgr
               This  function  similar  to  f.backiconmgr except that wrapping
               does not change rows.

       f.leftzoom
               This variable is  similar  to  the  f.bottomzoom  function  but
               causes  the selected window is only resized to the left half of
               the display.

       f.lower This function lowers the selected window.

       f.menu string
               This function  invokes  the  menu  specified  by  the  argument
               string.   Cascaded  menus  may  be  built  by  nesting calls to
               f.menu.

       f.move  This function drags an outline of the selected window  (or  the
               window  itself  if  the  OpaqueMove  variable is set) until the
               invoking pointer button is released.   Double  clicking  within
               the  number  of milliseconds given by ConstrainedMoveTime warps
               the pointer to the center of the window and constrains the move
               to  be  either  horizontal  or vertical depending on which grid
               line is crossed.  To abort a move, press another button  before
               releasing the first button.

       f.nexticonmgr
               This  function  warps  the  pointer  to  the  next icon manager
               containing any windows on the current or any succeeding screen.

       f.nop   This  function  does  nothing  and  is  typically used with the
               DefaultFunction or WindowFunction  variables  or  to  introduce
               blank lines in menus.

       f.previconmgr
               This  function  warps  the pointer to the previous icon manager
               containing any windows on the current or preceding screens.

       f.priority string
               This function sets  the  priority  of  the  client  owning  the
               selected  window  to  the numeric value of the argument string,
               which should be a signed integer in double quotes  (e.g.  "999"
               ).  This function has an effect only if the server supports the
               SYNC extension.

       f.quit  This function causes twm to restore the  window’s  borders  and
               exit.   If  twm is the first client invoked from xdm, this will
               result in a server reset.

       f.raise This function raises the selected window.

       f.raiselower
               This function raises the selected window  to  the  top  of  the
               stacking  order if it is occluded by any windows, otherwise the
               window will be lowered.

       f.refresh
               This function causes all windows to be refreshed.

       f.resize
               This function displays  an  outline  of  the  selected  window.
               Crossing  a  border  (or setting AutoRelativeResize) will cause
               the outline to begin to rubber band until the  invoking  button
               is  released.   To  abort a resize, press another button before
               releasing the first button.

       f.restart
               This function kills and restarts twm.

       f.startwm string
               This function kills twm and starts another window  manager,  as
               specified by string.

       f.righticonmgr
               This  function is similar to f.nexticonmgr except that wrapping
               does not change rows.

       f.rightzoom
               This variable is similar to the  f.bottomzoom  function  except
               that  the  selected window is only resized to the right half of
               the display.

       f.saveyourself
               This function sends a WM_SAVEYOURSELF message to  the  selected
               window  if  it  has  requested  the message in its WM_PROTOCOLS
               window property.  Clients that accept this message are supposed
               to  checkpoint  all state associated with the window and update
               the WM_COMMAND property as specified  in  the  ICCCM.   If  the
               selected window has not selected for this message, the keyboard
               bell will be rung.

       f.showiconmgr
               This function maps the current icon manager.

       f.sorticonmgr
               This function sorts the entries in  the  current  icon  manager
               alphabetically.  See the variable SortIconManager.

       f.title This  function provides a centered, unselectable item in a menu
               definition.  It should not be used in any other context.

       f.topzoom
               This variable is similar to the  f.bottomzoom  function  except
               that the selected window is only resized to the top half of the
               display.

       f.unfocus
               This function resets the focus back  to  pointer-driven.   This
               should be used when a focused window is no longer desired.

       f.upiconmgr
               This  function  warps  the  pointer  to the previous row in the
               current icon manager, wrapping to the  last  row  in  the  same
               column if necessary.

       f.vlzoom
               This function is a synonym for f.leftzoom.

       f.vrzoom
               This function is a synonym for f.rightzoom.

       f.warpring string
               This  function warps the pointer to the next or previous window
               (as indicated by the argument string, which may  be  "next"  or
               "prev") specified in the WindowRing variable.

       f.warpto string
               This  function warps the pointer to the window which has a name
               or class that matches string.  If the window is  iconified,  it
               will be deiconified if the variable WarpUnmapped is set or else
               ignored.

       f.warptoiconmgr string
               This function warps the  pointer  to  the  icon  manager  entry
               associated  with  the window containing the pointer in the icon
               manager specified by the argument string.  If string  is  empty
               (i.e. ""), the current icon manager is chosen.

       f.warptoscreen string
               This  function warps the pointer to the screen specified by the
               argument string.  String may be a number (e.g. "0" or "1"), the
               word  "next"  (indicating  the  current screen plus 1, skipping
               over any unmanaged screens), the word  "back"  (indicating  the
               current  screen  minus 1, skipping over any unmanaged screens),
               or the word "prev" (indicating the last screen visited.

       f.winrefresh
               This function is similar to the f.refresh function except  that
               only the selected window is refreshed.

       f.zoom  This  function  is  similar  to the f.fullzoom function, except
               that the only the height of the selected window is changed.

MENUS

       Functions may be grouped and interactively selected using pop-up  (when
       bound  to  a  pointer  button)  or  pull-down  (when  associated with a
       titlebutton) menus.  Each menu specification contains the name  of  the
       menu  as  it will be referred to by f.menu, optional default foreground
       and background colors, the list of item names and  the  functions  they
       should  invoke,  and  optional  foreground  and  background  colors for
       individual items:

            Menu "menuname" [ ("deffore":"defback") ]
            {
                 string1   [ ("fore1":"backn")]     function1
                 string2   [ ("fore2":"backn")]     function2
                      .
                      .
                      .
                 stringN   [ ("foreN":"backN")]     functionN
            }

       The menuname is  case-sensitive.   The  optional  deffore  and  defback
       arguments  specify the foreground and background colors used on a color
       display to highlight menu entries.  The string  portion  of  each  menu
       entry  will  be  the  text which will appear in the menu.  The optional
       fore and back arguments specify the foreground and background colors of
       the menu entry when the pointer is not in the entry.  These colors will
       only be used on a color display.  The default  is  to  use  the  colors
       specified  by  the  MenuForeground  and  MenuBackground variables.  The
       function portion of the menu entry is one of the  functions,  including
       any user-defined functions, or additional menus.

       There  is  a  special menu named TwmWindows which contains the names of
       all of the client and twm-supplied windows.  Selecting  an  entry  will
       cause   the   WindowFunction   to  be  executed  on  that  window.   If
       WindowFunction hasn’t been set, the  window  will  be  deiconified  and
       raised.

ICONS

       Twm  supports several different ways of manipulating iconified windows.
       The  common  pixmap-and-text  style  may  be  laid  out  by   hand   or
       automatically  arranged  as  described  by the IconRegion variable.  In
       addition, a terse grid of icon names, called an icon manager,  provides
       a more efficient use of screen space as well as the ability to navigate
       among windows from the keyboard.

       An icon manager is a window that contains  names  of  selected  or  all
       windows  currently  on  the display.  In addition to the window name, a
       small button using the default iconify symbol will be displayed to  the
       left of the name when the window is iconified.  By default, clicking on
       an entry in the icon manager performs f.iconify.  To change the actions
       taken  in the icon manager, use the the iconmgr context when specifying
       button and keyboard bindings.

       Moving the pointer into the icon manager also directs keyboard focus to
       the  indicated  window  (setting  the  focus explicitly or else sending
       synthetic  events  NoTitleFocus  is  set).   Using   the   f.upiconmgr,
       f.downiconmgr  f.lefticonmgr,  and  f.righticonmgr functions, the input
       focus can be changed between windows directly from the keyboard.

BUGS

       The resource manager should have been used instead of all of the window
       lists.

       The IconRegion variable should take a list.

       Double  clicking  very  fast  to get the constrained move function will
       sometimes cause the window to move, even  though  the  pointer  is  not
       moved.

       If    IconifyByUnmapping    is   on   and   windows   are   listed   in
       IconManagerDontShow but not in DontIconifyByUnmapping, they may be lost
       if  they  are  iconified  and  no  bindings  to  f.menu "TwmWindows" or
       f.warpto are setup.

FILES

       $HOME/.twmrc.<screen number>
       $HOME/.twmrc
       /usr/lib/X11/twm/system.twmrc

ENVIRONMENT VARIABLES

       DISPLAY This variable is used to determine which X server to  use.   It
               is  also  set  during  f.exec  so  that programs come up on the
               proper screen.

       HOME    This variable is used as the prefix for files that begin with a
               tilde and for locating the twm startup file.

SEE ALSO

       X(7), Xserver(1), xdm(1), xrdb(1)

AUTHORS

       Tom  LaStrange, Solbourne Computer; Jim Fulton, MIT X Consortium; Steve
       Pitschke, Stardent Computer; Keith  Packard,  MIT  X  Consortium;  Dave
       Sternlicht, MIT X Consortium; Dave Payne, Apple Computer.