[xscreensaver] / driver / XScreenSaver.ad.in

!
!                              XScreenSaver
!
!            a screen saver and locker for the X window system
!                            by Jamie Zawinski
!
!                              version 3.26
!                              10-Nov-2000
!
! See "man xscreensaver" for more info.  The latest version is always
! available at http://www.jwz.org/xscreensaver/


! These resources, when placed in the system-wide app-defaults directory
! (e.g., /usr/lib/X11/app-defaults/XScreenSaver) will provide the default
! settings for new users.  However, if you have a ".xscreensaver" file in
! your home directory, the settings in that file take precedence.


! Don't hand this file to "xrdb" -- that isn't how app-defaults files work.
! Though app-defaults files have (mostly) the same syntax as your ~/.Xdefaults
! file, they are used differently, and if you run this file through xrdb,
! you will probably mess things up.

#error Do not run app-defaults files through xrdb!
#error That does not do what you might expect.
#error Put this file in /usr/lib/X11/app-defaults/XScreenSaver instead.

! /* (xrdb prevention kludge: whole file)

*timeout:               10
*cycle:                 10
*lockTimeout:           0
*passwdTimeout:         30
*nice:                  10
*lock:                  False
*lockVTs:               True
*verbose:               False
*timestamp:             False
*fade:                  True
*unfade:                False
*fadeSeconds:           3
*fadeTicks:             20
*splash:                True
*splashDuration:        5
*visualID:              default

*captureStderr:         True
*overlayTextForeground: #FFFF00
*overlayTextBackground: #000000
*overlayStderr:         True
*font:                  *-medium-r-*-140-*-m-*

! The default is to use these extensions if available (as noted.)
*sgiSaverExtension:     True
*mitSaverExtension:     False
*xidleExtension:        True
*procInterrupts:        True

! This is what the "Demo" button on the splash screen runs (/bin/sh syntax.)
*demoCommand: xscreensaver-demo

! This is what the "Prefs" button on the splash screen runs (/bin/sh syntax.)
*prefsCommand: xscreensaver-demo -prefs

! This is the URL that the "Help" button on the splash screen loads.
*helpURL: http://www.jwz.org/xscreensaver/man.html

! This is how the "Help" button loads URLs (/bin/sh syntax.)
! The "helpURL" will be substituted for up to two occurrences of "%s".
*loadURL: netscape -remote 'openURL(%s)' || netscape '%s'

! This is what the "Manual" button in xscreensaver-demo runs (/bin/sh syntax.)
*manualCommand: xterm +sb -fg black -bg gray75 -T '%s manual' \
        -e /bin/sh -c 'man "%s" || read foo'
! Gnome folks might prefer this:
!*manualCommand: gnome-help-browser 'man:%s'


! The format used for printing the date and time in the password dialog box
! (see the strftime(3) manual page for details.)
*dateFormat:            %d-%b-%y (%a); %I:%M %p
! To show the time only:
! *dateFormat:          %I:%M %p
! For 24 hour time:
! *dateFormat:          %H:%M


! Turning on "installColormap" interacts erratically with twm and tvtwm,
! but seems to work fine with mwm and olwm.  Try it and see.  If your
! screen turns some color other than black, the window manager is buggy,
! and you need to set this resource to False (or get a WM that works.)
!
*installColormap:       True


! Any program which can draw on the root window will work as a screensaver.
! The following resource enumerates them.
!
! Programs are separated by newlines (specified in resource files with \n).
! Lines may be continued with a lone \ at the end of the line.
!
! Each line is an `sh' command.
!
! If the first (non-blank) character on the line is "-", then that means
! that this command is disabled: it's still in the list, but it won't ever
! be used.  (This is just to make it easy to disable and then re-enable 
! them later.)
!
! If the first word on the line is the name of a visual followed by a
! colon, then that visual will be used for the program, if it is available.
! If no such visual is available, then the program will be skipped.  In
! this way, you can specify that you want certain programs to run only
! on color screens, and others only on mono screens, by making use of the
! magic visual names "color" and "mono".  Likewise, if some hacks prefer
! colormaps, but others prefer 24-bit windows, that also can be arranged
! (in this case, by using "PseudoColor:" versus "TrueColor:".)
!
! Some of the screenhacks are written using OpenGL.  OpenGL programs are
! a bit different than normal X programs, in that they prefer visuals that
! are *half* as deep as the screen.  You can tell xscreensaver to select a
! good visual for a GL program by using the magic visual name "GL".
!
! All programs must be launched in such a way that they draw on the root
! window; they should not be spawned in the background with "&".  If shell
! metacharacters are used, they must be understandable to `sh', not `csh'
! (the $SHELL variable is not consulted, for unfortunate but good reasons.)
!
! Be sure to check out Demo Mode: run the `xscreensaver-demo' program to
! edit the current list of programs interactively, try out the various modes,
! and change other parameters.  See the man page for details.
!
*programs:                                                                    \
                 "Qix (solid)"  qix -root -solid -delay 0 -segments 100     \n\
           "Qix (transparent)"  qix -root -count 4 -solid -transparent      \n\
                "Qix (linear)"  qix -root -count 5 -solid -transparent        \
                                  -linear -segments 250 -size 100           \n\
- mono:            "Qix (xor)"  qix -root -linear -count 5 -size 200          \
                                  -spread 30 -segments 75 -solid -xor       \n\
                                                                              \
          "Attraction (balls)"  attraction -root -mode balls                \n\
          "Attraction (lines)"  attraction -root -mode lines -points 3        \
                                  -segments 200                             \n\
-          "Attraction (poly)"  attraction -root -mode polygons             \n\
        "Attraction (splines)"  attraction -root -mode splines -segments      \
                                  300                                       \n\
        "Attraction (orbital)"  attraction -root -mode lines -radius 300      \
                                  -orbit -vmult 0.5                         \n\
                                                                              \
                                pyro -root                                  \n\
                                rocks -root                                 \n\
                                helix -root                                 \n\
                                pedal -root                                 \n\
                                rorschach -root -offset 7                   \n\
                                hopalong -root                              \n\
                                greynetic -root                             \n\
                                xroger -root                                \n\
                                imsmap -root                                \n\
                                slidescreen -root                           \n\
                                decayscreen -root                           \n\
                                jigsaw -root                                \n\
                                blitspin -root -grab                        \n\
                                slip -root                                  \n\
                                distort -root                               \n\
                                spotlight -root                             \n\
              "Ripples (oily)"  ripples -root -oily -light 2                \n\
              "Ripples (stir)"  ripples -root -oily -light 2 -stir          \n\
           "Ripples (desktop)"  ripples -root -water -light 6               \n\
                                hypercube -root                             \n\
                                hyperball -root                             \n\
                                halo -root                                  \n\
                                maze -root                                  \n\
                                noseguy -root                               \n\
                                flame -root                                 \n\
                                lmorph -root                                \n\
                                deco -root                                  \n\
                                moire -root                                 \n\
                                moire2 -root                                \n\
                                lightning -root                             \n\
                                strange -root                               \n\
                                spiral -root                                \n\
                                laser -root                                 \n\
                                grav -root                                  \n\
               "Grav (trails)"  grav -root -trail -decay                    \n\
                                drift -root                                 \n\
                                ifs -root                                   \n\
                                julia -root                                 \n\
                                penrose -root                               \n\
                                sierpinski -root                            \n\
                                braid -root                                 \n\
                                galaxy -root                                \n\
                                bouboule -root                              \n\
                                swirl -root                                 \n\
                                flag -root                                  \n\
                                sphere -root                                \n\
                                forest -root                                \n\
                                lisa -root                                  \n\
                                lissie -root                                \n\
                                goop -root -max-velocity 0.5 -elasticity      \
                                  0.9                                       \n\
                                starfish -root                              \n\
             "Starfish (blob)"  starfish -root -blob                        \n\
                                munch -root                                 \n\
                                fadeplot -root                              \n\
                                coral -root -delay 0                        \n\
                                mountain -root                              \n\
                                triangle -root -delay 1                     \n\
                                worm -root                                  \n\
                                rotor -root                                 \n\
                                ant -root                                   \n\
                                demon -root                                 \n\
                                loop -root                                  \n\
                                vines -root                                 \n\
                                kaleidescope -root                          \n\
                                xjack -root                                 \n\
                                xlyap -root -randomize                      \n\
                                cynosure -root                              \n\
                                flow -root                                  \n\
                                epicycle -root                              \n\
                                interference -root                          \n\
                                truchet -root -randomize                    \n\
                                bsod -root                                  \n\
                                crystal -root                               \n\
                                discrete -root                              \n\
                                kumppa -root                                \n\
                                rd-bomb -root                               \n\
            "RD-Bomb (mobile)"  rd-bomb -root -speed 1 -size 0.1            \n\
                                sonar -root                                 \n\
                                t3d -root                                   \n\
                                penetrate -root                             \n\
                                deluxe -root                                \n\
                                compass -root                               \n\
                                squiral -root                               \n\
                                xflame -root                                \n\
                                wander -root                                \n\
              "Wander (spots)"  wander -root -advance 0 -size 10 -circles     \
                                  True -length 10000 -reset 100000          \n\
                                critical -root                              \n\
                                phosphor -root                              \n\
                                xmatrix -root                               \n\
                                petri -root -size 2 -count 20               \n\
                     "Petri 2"  petri -root -minlifespeed 0.02                \
                                  -maxlifespeed 0.03 -minlifespan 1           \
                                  -maxlifespan 1 -instantdeathchan 0          \
                                  -minorchan 0 -anychan 0.3                 \n\
                                shadebobs -root                             \n\
                                ccurve -root                                \n\
                                blaster -root                               \n\
                                bumps -root                                 \n\
                                xteevee -root                               \n\
                                xspirograph -root                           \n\
                                nerverot -root                              \n\
-           "NerveRot (dense)"  nerverot -root -count 1000                  \n\
-           "NerveRot (thick)"  nerverot -root -count 100 -line-width 4       \
                                -max-nerve-radius 0.8 -nervousness 0.5 -db  \n\
                                xrayswarm -root                             \n\
  color:                        bubbles -root                               \n\
  default-n:                    webcollage -root                            \n\
  default-n:  "WebCollage (whacked)"                                          \
                                webcollage -root -filter                      \
                                  'vidwhacker -stdin -stdout'               \n\
- default-n:                    vidwhacker -root                            \n\
                                                                              \
@GL_KLUDGE@ GL:                 gears -root                                 \n\
@GL_KLUDGE@ GL:                 superquadrics -root                         \n\
@GL_KLUDGE@ GL:                 morph3d -root                               \n\
@GL_KLUDGE@ GL:                 cage -root                                  \n\
@GL_KLUDGE@ GL:                 moebius -root                               \n\
@GL_KLUDGE@ GL:                 stairs -root                                \n\
@GL_KLUDGE@ GL:                 pipes -root                                 \n\
@GL_KLUDGE@ GL:                 sproingies -root                            \n\
@GL_KLUDGE@ GL:                 rubik -root                                 \n\
@GL_KLUDGE@ GL:                 atlantis -root                              \n\
@GL_KLUDGE@ GL:                 lament -root                                \n\
@GL_KLUDGE@ GL:                 bubble3d -root                              \n\
@GL_KLUDGE@ GL:                 glplanet -root                              \n\
@GL_KLUDGE@ GL:                 pulsar -root                                \n\
-          GL:     "Pulsar (textures)"                                        \
                                  pulsar -root -texture -mipmap               \
                                  -texture_quality -light -fog              \n\
@GLE_KLUDGE@GL:                 extrusion -root                             \n\
@GL_KLUDGE@ GL:                 sierpinski3d -root                          \n\
@GL_KLUDGE@ GL:                 gflux -root                                 \n\
                                                                              \
-                               xdaliclock -root -builtin3 -cycle           \n\
- default-n:                    xearth -nofork -nostars -ncolors 50           \
                                  -night 3 -wait 0 -timewarp 400.0 -pos       \
                                  sunrel/38/-30                             \n\
-                               ssystem -fullscreen :32                     \n\
-                               xmountains -b -M -Z 0 -r 1                  \n\
-       "XMountains (top)"      xmountains -b -M -Z 0 -r 1 -m               \n\
-                               xaos -root -autopilot -incoloring -1          \
                                  -nogui -outcoloring -1                    \n\
-                               xfishtank -d -s                             \n\
-                               xsnow                                       \n\
-                               goban -root                                 \n\
-                               electricsheep                               \n


! To display a randomized slideshow of images, you can do something like this:
!
!    default-n:  "Slideshow"    xv -root -rmode 5 -random -viewonly           \
!                                 -wloop -wait 30 $HOME/bitmaps/*.jpg       \n\
!
! or, if you prefer "xli" to "xv", like this: (but note that xli's "-delay"
! option doesn't work in conjunction with "-onroot", so you need to add a
! line for each image individually... "xv" is better in this respect.)
!
!    default-n: xli -quiet -onroot -center -border black                      \
!                 $HOME/bitmaps/pic1.jpg                                    \n\
!    default-n: xli -quiet -onroot -center -border black                      \
!                 $HOME/bitmaps/pic2.jpg                                    \n\
!    default-n: xli -quiet -onroot -center -border black                      \
!                 $HOME/bitmaps/pic3.jpg                                    \n\
!
! Note that we've used "default-n" as the visual name, rather than just
! "default": this means "default visual, no install", that is, it's like
! specifying the command-line arguments "-visual default -no-install".
! This is necessary because, when XV or XLI arerunning in "-root" mode, they
! always assume that the default visual and colormap are being used, rather
! than  examining the window it is drawing on to see what visual and colormap
! it has.  If we didn't force the default visual to be used, we would get an
! X error.  If we didn't force the default colormap to be installed, the
! colors would be all wrong.  "default-i" may also be used as a visual name
! (meaning, "-visual default -install") but you probably won't ever need
! to use that.
!
!
! Some of the GL demos that SGI ships work with XScreenSaver; most don't.
! XScreenSaver includes a program (not built or installed by default)
! called "xscreensaver-sgigl".  To use the SGI demos with XScreenSaver,
! build that program, and use it to launch the SGI demos.  For example,
! on Irix 6.2, you can do this:
!
!     xscreensaver-sgigl /usr/demos/bin/ep -S
!     xscreensaver-sgigl /usr/demos/bin/bongo
!
! On Irix 6.3, things have moved, so you need to do it like this:
!
!     xscreensaver-sgigl /usr/sbin/ep -S
!
! You can also use the "ant" demo, but first you need to wrap a shell script
! around it that cds to its home directory, so that it can find its files;
! and also pass it the -S argument, to prevent it from forking.  What a mess!
! Basically, the SGI demo writers went out of their way to make my life hell.



!=============================================================================
!
!      You probably don't want to change anything after this point.
!
!=============================================================================


XScreenSaver.pointerPollTime:           5
XScreenSaver.initialDelay:              0
XScreenSaver.windowCreationTimeout:     30
XScreenSaver.bourneShell:               /bin/sh


! Resources for the password and splash-screen dialog boxes of
! the "xscreensaver" daemon.
!
*Dialog.headingFont:            *-times-bold-r-*-*-*-180-*-*-*-iso8859-1
*Dialog.bodyFont:               *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1
*Dialog.labelFont:              *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1
*Dialog.buttonFont:             *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1
*Dialog.dateFont:               *-courier-medium-r-*-*-*-80-*-*-*-iso8859-1
*Dialog.foreground:             #000000
*Dialog.background:             #BFBFBF
*Dialog.Button.foreground:      #000000
*Dialog.Button.background:      #D0D0D0
*Dialog.text.foreground:        #000000
*Dialog.text.background:        #FFFFFF
*Dialog.logo.foreground:        #FF0000
*Dialog.logo.background:        #FFFFFF
*Dialog.topShadowColor:         #E7E7E7
*Dialog.bottomShadowColor:      #737373
*Dialog.logo.width:             200
*Dialog.logo.height:            200
*Dialog.internalBorderWidth:    30
*Dialog.borderWidth:            1
*Dialog.shadowThickness:        4

*passwd.heading.label:          XScreenSaver %s
*passwd.body.label:             This display is locked.
*passwd.user.label:             User:
*passwd.passwd.label:           Password:
*passwd.passwdFont:             *-courier-medium-r-*-*-*-140-*-*-*-iso8859-1
*passwd.thermometer.width:      8

*splash.heading.label:          XScreenSaver %s
*splash.body.label:             Copyright © 1991-2000 by
*splash.body2.label:            Jamie Zawinski <jwz@jwz.org>
*splash.demo.label:             Demo
*splash.prefs.label:            Prefs
*splash.help.label:             Help


! Resources for the Motif dialog boxes of the "xscreensaver-demo" program.
! 
*fontList:                       *-helvetica-medium-r-*-*-*-120-*-*-*-iso8859-1
*demoDialog*label1.fontList:     *-helvetica-medium-r-*-*-*-140-*-*-*-iso8859-1
*cmdText.fontList:                 *-courier-medium-r-*-*-*-120-*-*-*-iso8859-1
*label0.fontList:                  *-helvetica-bold-r-*-*-*-140-*-*-*-iso8859-1
XScreenSaver*doc.fontList:       *-helvetica-medium-r-*-*-*-100-*-*-*-iso8859-1
! above must be fully qualified to get around *sgiMode.

*foreground:                    #000000
*background:                    #C0C0C0
*XmTextField.foreground:        #000000
*XmTextField.background:        #FFFFFF
*list.foreground:               #000000
*list.background:               #FFFFFF

*ApplicationShell.title:        XScreenSaver
*warning.title:                 XScreenSaver
*warning_popup.title:           XScreenSaver
*allowShellResize:              True
*autoUnmanage:                  False

*menubar*file.labelString:      File
*menubar*file.mnemonic:         F
*file.blank.labelString:        Blank Screen Now
*file.blank.mnemonic:           B
*file.lock.labelString:         Lock Screen Now
*file.lock.mnemonic:            L
*file.kill.labelString:         Kill Daemon
*file.kill.mnemonic:            K
*file.restart.labelString:      Restart Daemon
*file.restart.mnemonic:         R
*file.exit.labelString:         Exit
*file.exit.mnemonic:            E

*menubar*edit.labelString:      Edit
*menubar*edit.mnemonic:         E
*edit.cut.labelString:          Cut
*edit.cut.mnemonic:             u
*edit.copy.labelString:         Copy
*edit.copy.mnemonic:            C
*edit.paste.labelString:        Paste
*edit.paste.mnemonic:           P

*menubar*help.labelString:      Help
*menubar*help.mnemonic:         H
*help.about.labelString:        About...
*help.about.mnemonic:           A
*help.docMenu.labelString:      Documentation...
*help.docMenu.mnemonic:         D

*demoTab.marginWidth:           10
*optionsTab.marginWidth:        10

*XmScrolledWindow.topOffset:    10
*XmScrolledWindow.leftOffset:   10
*demoTab.topOffset:             4
*form1.bottomOffset:            10
*form3.leftOffset:              10
*form3.rightOffset:             10
*frame.topOffset:               10
*frame.bottomOffset:            10
*enabled.topOffset:             10
*visLabel.topOffset:            10
*combo.topOffset:               10
*form4.bottomOffset:            4
*hr.bottomOffset:               4
*XmComboBox.marginWidth:        0
*XmComboBox.marginHeight:       0

*demo.marginWidth:              30
*demo.marginHeight:             4
*man.marginWidth:               10
*man.marginHeight:              4
*down.leftOffset:               40
*down.marginWidth:              4
*down.marginHeight:             4
*up.marginWidth:                4
*up.marginHeight:               4
*frame.traversalOn:             False

*list.automaticSelection:       True
*list.visibleItemCount:         20
*doc.columns:                   60
*combo.columns:                 11

*demoTab.labelString:           Graphics Demos
*optionsTab.labelString:        Screensaver Options
*down.labelString:              \\/ 
*up.labelString:                /\\ 
*frameLabel.labelString:        
*cmdLabel.labelString:          Command Line:
*cmdLabel.alignment:            ALIGNMENT_BEGINNING
*enabled.labelString:           Enabled
*visLabel.labelString:          Visual:
*visLabel.alignment:            ALIGNMENT_END
*visLabel.leftOffset:           20
*demo.labelString:              Demo
*man.labelString:               Documentation...
*done.labelString:              Quit

*preferencesLabel.labelString:  XScreenSaver Parameters

*timeoutLabel.labelString:      Saver Timeout
*cycleLabel.labelString:        Cycle Timeout
*fadeSecondsLabel.labelString:  Fade Duration
*fadeTicksLabel.labelString:    Fade Ticks
*lockLabel.labelString:         Lock Timeout
*passwdLabel.labelString:       Password Timeout
*preferencesForm*XmTextField.columns:   8

*verboseToggle.labelString:     Verbose
*cmapToggle.labelString:        Install Colormap
*fadeToggle.labelString:        Fade Colormap
*unfadeToggle.labelString:      Unfade Colormap
*lockToggle.labelString:        Require Password


*OK.marginWidth:                30
*OK.marginHeight:               4
*OK.leftOffset:                 10
*OK.bottomOffset:               10
*Cancel.marginWidth:            30
*Cancel.marginHeight:           4
*Cancel.rightOffset:            10
*Cancel.bottomOffset:           10




!=============================================================================
!
! Online documentation for xscreensaver-demo.
!
!=============================================================================

! sanity check -- hands off.
*hacks.documentation.isInstalled: True

*hacks.qix.documentation:                                               \
This is the swiss army chainsaw of qix programs.  It bounces a series   \
of line segments around the screen, and uses variations on this basic   \
motion pattern to produce all sorts of different presentations: line    \
segments, filled polygons, overlapping translucent areas...  Written    \
by Jamie Zawinski.

*hacks.attraction.documentation:                                        \
Like qix, this uses a simple simple motion model to generate many       \
different display modes.  The control points attract each other up to   \
a certain distance, and then begin to repel each other.  The            \
attraction/repulsion is proportional to the distance between any two    \
particles, similar to the strong and weak nuclear forces.               \
                                                                    \n\n\
One of the most interesting ways to watch this hack is simply as        \
bouncing balls, because their motions and interactions with each        \
other are so odd.  Sometimes two balls will get into a tight orbit      \
around each other, to be interrupted later by a third, or by the edge   \
of the screen.  It looks quite chaotic.                                 \
                                                                    \n\n\
Written by Jamie Zawinski, based on Lisp code by John Pezaris.

*hacks.pyro.documentation:                                              \
Pyro draws exploding fireworks.  Blah blah blah.  Written by Jamie      \
Zawinski.

*hacks.helix.documentation:                                             \
This repeatedly generates spirally string-art-ish patterns.  Written    \
by Jamie Zawinski.

*hacks.pedal.documentation:                                             \
This is sort of a combination spirograph/string-art.  It generates a    \
large, complex polygon, and lets the X server do the bulk of the work   \
by giving it an even/odd winding rule.  Written by Dale Moore, based    \
on some ancient PDP-11 code.

*hacks.rorschach.documentation:                                         \
This generates random inkblot patterns.  The algorithm is deceptively   \
simple for how well it works; it merely walks a dot around the screen   \
randomly, and then reflects the image horizontally, vertically, or      \
both.  Any deep-seated neurotic tendencies which this program reveals   \
are your own problem.  Written by Jamie Zawinski.

*hacks.hopalong.documentation:                                          \
This draws lacy fractal patterns, based on iteration in the imaginary   \
plane, from a 1986 Scientific American article.  Mostly written by      \
Patrick Naughton.

*hacks.greynetic.documentation:                                         \
This draws random colored and stippled rectangles.  Written by Jamie    \
Zawinski.

*hacks.xroger.documentation:                                            \
The XScreenSaver logo. Don't you hate it?  So do I.  Would you like     \
to design a new logo for XScreenSaver?  If so, send jwz your            \
submissions.

*hacks.imsmap.name: IMSmap
*hacks.imsmap.documentation:                                            \
This generates random cloud-like patterns.  It looks quite different    \
in monochrome and color.  The basic idea is to take four points on      \
the edge of the image, and assign each a random ``elevation''.  Then    \
find the point between them, and give it a value which is the average   \
of the other four, plus some small random offset. Then coloration is    \
done based on elevation.                                                \
                                                                    \n\n\
The color selection is done by binding the elevation to either hue,     \
saturation, or brightness, and assigning random values to the others.   \
The ``brightness'' mode tends to yield cloudlike patterns, and the      \
others tend to generate images that look like heat-maps or CAT-scans.   \
Written by Juergen Nickelsen and Jamie Zawinski.

*hacks.slidescreen.name: SlideScreen
*hacks.slidescreen.documentation:                                       \
This grabs an image of whatever is on your screen, divides it into a    \
grid, and then randomly shuffles the squares around as if it was one    \
of those annoying ``16-puzzle'' games, where there is a grid of         \
squares, one of which is missing.  I hate trying to solve those         \
puzzles, but watching one permute itself is more amusing.  Written by   \
Jamie Zawinski.

*hacks.decayscreen.name: DecayScreen
*hacks.decayscreen.documentation:                                       \
This grabs an image of whatever is on your screen, and makes it melt.   \
You've no doubt seen this effect before, but no screensaver would       \
really be complete without it.  It works best if there's something      \
colorful visible.  Warning, if the effect continues after the screen    \
saver is off, seek medical attention.  Written by David Wald and        \
Vivek Khera.                                                            \
                                                                    \n\n\
A number of these screenhacks have the ability to take an image of      \
your desktop and manipulate it in some way.  On SGI systems, these      \
programs are able to (at random) pull their source image from the       \
system's video input instead!  This works nicely if you leave some      \
some random television station plugged in.

*hacks.jigsaw.documentation:                                            \
This grabs a screen image, carves it up into a jigsaw puzzle,           \
shuffles it, and then solves the puzzle.  This works especially well    \
when you feed it an external video signal instead of letting it grab    \
the screen image (actually, I guess this is generally true...)  When    \
it is grabbing a video image, it is sometimes pretty hard to guess      \
what the image is going to look like once the puzzle is solved.         \
Written by Jamie Zawinski.

*hacks.blitspin.name: BlitSpin
*hacks.blitspin.documentation:                                          \
The ``blitspin'' hack repeatedly rotates a bitmap by 90 degrees by      \
using logical operations: the bitmap is divided into quadrants, and     \
the quadrants are shifted clockwise.  Then the same thing is done       \
again with progressively smaller quadrants, except that all             \
sub-quadrants of a given size are rotated in parallel.  Written by      \
Jamie Zawinski based on some cool SmallTalk code seen in in Byte        \
Magazine in 1981.                                                       \
                                                                    \n\n\
As you watch it, the image appears to dissolve into static and then     \
reconstitute itself, but rotated. You can provide the image to use,     \
as an XBM or XPM file, or tell it to grab a screen image and rotate     \
that.

*hacks.slip.documentation:                                              \
This program throws some random bits on the screen, then sucks them     \
through a jet engine and spews them out the other side.  To avoid       \
turning the image completely to mush, every now and then it will and    \
then it interjects some splashes of color into the scene, or go into    \
a spin cycle, or stretch the image like taffy, or (this is my           \
addition) grab an image of your current desktop to chew on.             \
Originally written by Scott Draves; whacked on by Jamie Zawinski.

*hacks.distort.documentation:                                           \
This hack grabs an image of the screen, and then lets a transparent     \
lens wander around the screen, magnifying whatever is underneath.       \
Written by Jonas Munsin.

*hacks.spotlight.documentation:                                         \
Draws a spotlight scanning across a black screen, illumnating the       \
underlying desktop when it passes.  Written by Rick Schultz.

*hacks.hypercube.documentation:                                         \
This displays 2D projections of the sequence of 3D objects which are    \
the projections of the 4D analog to the cube: as a square is composed   \
of four lines, each touching two others; and a cube is composed of      \
six squares, each touching four others; a hypercube is composed of      \
eight cubes, each touching six others.  To make it easier to            \
visualize the rotation, it uses a different color for the edges of      \
each face.  Don't think about it too long, or your brain will melt.     \
Written by Joe Keane, Fritz Mueller, and Jamie Zawinski.

*hacks.hyperball.documentation:                                         \
Hyperball is to hypercube as icosahedron is to cube: this displays      \
a 2D projection of the sequence of 3D objects which are the projections \
of the 4D analog to the icosahedron.  Written by Joe Keane.

*hacks.halo.documentation:                                              \
This draws trippy psychedelic circular patterns that hurt to look at.   \
It can also animate the control-points, but that takes a lot of CPU     \
and bandwidth.  Written by Jamie Zawinski.

*hacks.maze.documentation:                                              \
This is the ancient X maze demo, modified to work with xscreensaver.    \
It generates a random maze, then solves it with visual feedback.        \
Originally by Jim Randell; modified by a cast of thousands.

*hacks.noseguy.documentation:                                           \
A little man with a big nose wanders around your screen saying          \
things.  The things which he says can come from a file, or from an      \
external program like `zippy' or `fortune'.  This was extracted from    \
`xnlock' by Dan Heller.  Colorized by Jamie Zawinski.

*hacks.flame.documentation:                                             \
Another iterative fractal generator.  Written by Scott Draves.

*hacks.lmorph.name: LMorph
*hacks.lmorph.documentation:                                            \
This generates random spline-ish line drawings and morphs between       \
them.  Written by Sverre H.  Huseby and Glenn T.  Lines.

*hacks.deco.documentation:                                              \
This one subdivides and colors rectangles randomly.  It looks kind of   \
like Brady-Bunch-era rec-room wall paneling.  (Raven says: ``this       \
screensaver is ugly enough to peel paint.'')  Written by Jamie          \
Zawinski, inspired by Java code by Michael Bayne.

*hacks.moire.documentation:                                             \
This one draws cool circular interference patterns.  Most of the        \
circles you see aren't explicitly rendered, but show up as a result     \
of interactions between the other pixels that were drawn.  Written by   \
Jamie Zawinski, inspired by Java code by Michael Bayne.  As he          \
pointed out, the beauty of this one is that the heart of the display    \
algorithm can be expressed with just a pair of loops and a handful of   \
arithmetic, giving it a high ``display hack metric''.

*hacks.moire2.documentation:                                            \
Another example of the fun you can have with moire                      \
interference patterns; this hack generates fields of concentric         \
circles or ovals, and combines the planes with various operations.      \
The planes are moving independently of one another, causing the         \
interference lines to ``spray.''  Written by Jamie Zawinski.

*hacks.lightning.documentation:                                         \
This one draws crackling fractal lightning bolts.  It's simple,         \
direct, and to the point.  If only it had sound... Written by Keith     \
Romberg.

*hacks.strange.documentation:                                           \
This draws strange attractors: it's a colorful,                         \
unpredictably-animating field of dots that swoops and twists around.    \
The motion is very nice.  Written by Massimino Pascal.

*hacks.spiral.documentation:                                            \
Moving circular patterns, by Peter Schmitzberger.  Moving circular      \
patterns means moire; interference patterns, of course.

*hacks.laser.documentation:                                             \
Moving radiating lines, that look vaguely like scanning laser beams.    \
Written by Pascal Pensa.  (Frankie say: relax.)

*hacks.grav.documentation:                                              \
This program draws a simple orbital simulation.  If you turn on         \
trails, it looks kind of like a cloud-chamber photograph.  Written      \
by Greg Bowering.

*hacks.drift.documentation:                                             \
How could one possibly describe this except as ``drifting recursive     \
fractal cosmic flames?''  Another fine hack from the Scott Draves       \
collection of fine hacks.

*hacks.ifs.name: IFS
*hacks.ifs.documentation:                                               \
This one draws spinning, colliding iterated-function-system images.     \
Written by Massimino Pascal.

*hacks.julia.documentation:                                             \
This one draws spinning, animating (are you detecting a pattern here    \
yet?)  explorations of the Julia set. You've probably seen static       \
images of this fractal form before, but it's a lot of fun to watch in   \
motion as well.  One interesting thing is that there is a small         \
swinging dot passing in front of the image, which indicates the         \
control point from which the rest of the image was generated.           \
Written by Sean McCullough.

*hacks.penrose.documentation:                                           \
Draws quasiperiodic tilings; think of the implications on modern        \
formica technology.  Written by Timo Korvola.                           \
                                                                    \n\n\
In April 1997, Sir Roger Penrose, a British math professor who has      \
worked with Stephen Hawking on such topics as relativity, black         \
holes, and whether time has a beginning, filed a                        \
copyright-infringement lawsuit against the Kimberly-Clark               \
Corporation, which Penrose said copied a pattern he created (a          \
pattern demonstrating that ``a nonrepeating pattern could exist in      \
nature'') for its Kleenex quilted toilet paper. Penrose said he         \
doesn't like litigation but, ``When it comes to the population of       \
Great Britain being invited by a multinational to wipe their bottoms    \
on what appears to be the work of a Knight of the Realm, then a last    \
stand must be taken.''                                                  \
                                                                    \n\n\
As reported by News of the Weird #491, 4-jul-1997.

*hacks.sierpinski.documentation:                                        \
This draws the two-dimensional variant of the recursive Sierpinski      \
triangle fractal.  Written by Desmond Daignault.

*hacks.braid.documentation:                                             \
Draws random color-cycling inter-braided concentric circles.  Written   \
by John Neil.

*hacks.galaxy.documentation:                                            \
This draws spinning galaxies, which then collide and scatter their      \
stars to the, uh, four winds or something.  Originally an Amiga         \
program by Uli Siegmund.

*hacks.bouboule.documentation:                                          \
This draws what looks like a spinning, deforming baloon with            \
varying-sized spots painted on its invisible surface.  Written by       \
Jeremie Petit.

*hacks.swirl.documentation:                                             \
More flowing, swirly patterns. This version is by M.  Dobie and R.      \
Taylor, but you might have seen a Mac program similar to this called    \
FlowFazer.  There is also a cool Java applet of a similar concept

*hacks.flag.documentation:                                              \
This draws a waving colored flag, that undulates its way around the     \
screen.  The trick is the flag can contain arbitrary text and images.   \
By default, it displays either the current system name and OS           \
type, or a picture of ``Bob,'' but you can replace the text or the      \
image with a command-line option.  Written by Charles Vidal and Jamie   \
Zawinski.

*hacks.sphere.documentation:                                            \
Another of the classic screenhacks of the distant past, this one        \
draws shaded spheres in multiple colors.  This hack traces its          \
lineage back to Tom Duff in 1982.

*hacks.forest.documentation:                                            \
This draws fractal trees.  Written by Peter Baumung.  Everybody loves   \
fractals, right?

*hacks.lisa.documentation:                                              \
This draws Lisajous loops, by Caleb Cullen.  Remember that device       \
they had the Phantom Zone prisoners in during their trial in            \
Superman?  I think that was one of these.

*hacks.lissie.documentation:                                            \
Another Lissajous figure.  This one draws the progress of circular      \
shapes along a path.  Written by Alexander Jolk.

*hacks.goop.documentation:                                              \
This draws set of animating, transparent, amoeba-like blobs.  The       \
blobs change shape as they wander around the screen, and they are       \
translucent, so you can see the lower blobs through the higher ones,    \
and when one passes over another, their colors merge.  Written by       \
Jamie Zawinski.  I got the idea for this from a cool mouse pad I        \
have, which achieves the same kind of effect in real life by having     \
several layers plastic with colored oil between them.  Written by       \
Jamie Zawinski.

*hacks.starfish.documentation:                                          \
This generates a sequence of undulating, throbbing, star-like           \
patterns which pulsate, rotate, and turn inside out.  Another display   \
mode uses these shapes to lay down a field of colors, which are then    \
cycled.  The motion is very organic.  Written by Jamie Zawinski.

*hacks.munch.documentation:                                           \n\
        DATAI 2                                                       \n\
        ADDB 1,2                                                      \n\
        ROTC 2,-22                                                    \n\
        XOR 1,2                                                       \n\
        JRST .-4                                                      \n\
                                                                      \n\
As reported by HAKMEM, in 1962, Jackson Wright wrote the above PDP-1    \
code. That code still lives on in this screenhack, some 35 years        \
later.  The number of lines of enclosing code has increased             \
substantially, however.  This version is by Tim Showalter.

*hacks.fadeplot.name: FadePlot
*hacks.fadeplot.documentation:                                          \
Draws what looks like a waving ribbon following a sinusoidal path.      \
Written by Bas van Gaalen and Charles Vidal.

*hacks.coral.documentation:                                             \
Simulates coral growth, albeit somewhat slowly.  This image doesn't     \
really do it justice.  Written by Frederick Roeber.

*hacks.mountain.documentation:                                          \
Generates random 3d plots that look vaguely mountainous.  Written by    \
Pascal Pensa.

*hacks.triangle.documentation:                                          \
Generates random mountain ranges using iterative subdivision of         \
triangles.  Written by Tobias Gloth.

*hacks.worm.documentation:                                              \
An ancient xlock hack that draws multicolored worms that crawl around   \
the screen.  Written by Brad Taylor, Dave Lemke, Boris Putanec, and     \
Henrik Theiling.

*hacks.rotor.documentation:                                             \
Another ancient xlock demo, this one by Tom Lawrence.  It draws a       \
line segment moving along a complex spiraling curve.  I tweaked this    \
to generate curvier lines, but still frames of it don't look like       \
much.

*hacks.ant.documentation:                                               \
A cellular automaton that is really a two-dimensional Turing machine:   \
as the heads (``ants'') walk along the screen, they change pixel        \
values in their path.  Then, as they pass over changed pixels, their    \
behavior is influenced.  Written by David Bagley.

*hacks.demon.documentation:                                             \
A cellular automaton that starts with a random field, and organizes     \
it into stripes and spirals.  Written by David Bagley.

*hacks.loop.documentation:                                              \
This one produces loop-shaped colonies that spawn, age, and             \
eventually die.  Written by David Bagley.

*hacks.vines.documentation:                                             \
This one generates a continuous sequence of small, curvy geometric      \
patterns.  It scatters them around your screen until it fills up,       \
then it clears the screen and starts over.  Written by Tracy Camp and   \
David Hansen.

*hacks.kaleidescope.documentation:                                      \
Another clone of an ancient meme, consisting largely of frenetic        \
rotational motion of colored lines.  This one is by Ron Tapia.  The     \
motion is nice, but I think it needs more solids, or perhaps just       \
brighter colors.  More variations in the rotational speed might help,   \
too.

*hacks.xjack.documentation:                                             \
This program behaves schizophrenically and makes a lot of typos.        \
Written by Jamie Zawinski.  If you haven't seen Stanley Kubrick's       \
masterpiece, ``The Shining,'' you won't get it.  Those who have         \
describe this hack as ``inspired.''

*hacks.xlyap.documentation:                                             \
This generates pretty fractal pictures by doing funky math involving    \
the ``Lyapunov exponent.''  It has a cool interactive mode, too.        \
Written by Ron Record.

*hacks.cynosure.documentation:                                          \
A hack similar to `greynetic', but less frenetic.  The first            \
implementation was by Stephen Linhart; then Ozymandias G. Desiderata    \
wrote a Java applet clone.  That clone was discovered by Jamie          \
Zawinski, and ported to C for inclusion here.

*hacks.flow.documentation:                                              \
Another series of strange attractors: a flowing series of points,       \
making strange rotational shapes.  Written by Jeff Butterworth.

*hacks.epicycle.documentation:                                          \
This program draws the path traced out by a point on the edge of a      \
circle.  That circle rotates around a point on the rim of another       \
circle, and so on, several times. These were the basis for the          \
pre-heliocentric model of planetary motion.  Written by James           \
Youngman.

*hacks.interference.documentation:                                      \
Another color-field hack, this one works by computing decaying          \
sinusoidal waves, and allowing them to interfere with each other as     \
their origins move.  Written by Hannu Mallat.

*hacks.truchet.documentation:                                           \
This draws line- and arc-based Truchet patterns that tile the screen.   \
Written by Adrian Likins.

*hacks.bsod.name: BSOD
*hacks.bsod.documentation:                                              \
BSOD stands for ``Blue Screen of Death.''  The finest in personal       \
computer emulation, this hack simulates popular screen savers from a    \
number of less robust operating systems.  Written by Jamie Zawinski.

*hacks.crystal.documentation:                                           \
Moving polygons, similar to a kaleidescope (more like a kaleidescope    \
than the hack called `kaleid,' actually.) This one by Jouk Jansen.

*hacks.discrete.documentation:                                          \
More ``discrete map'' systems, including new variants of Hopalong and   \
Julia, and a few others.  Written by Tim Auckland.

*hacks.kumppa.documentation:                                            \
Spiraling, spinning, and very, very fast splashes of color rush         \
toward the screen.  Written by Teemu Suutari.

*hacks.rd-bomb.name: RD-Bomb
*hacks.rd-bomb.documentation:                                           \
Another variation of the `Bomb' program by Scott Draves.  This draws    \
a grid of growing square-like shapes that, once they overtake each      \
other, react in unpredictable ways.  ``RD'' stands for                  \
reaction-diffusion.

*hacks.sonar.documentation:                                             \
This program draws a simulation of a sonar screen.  Written by          \
default, it displays a random assortment of ``bogies'' on the screen,   \
but if compiled properly, it can ping (pun intended) your local         \
network, and actually plot the proximity of the other hosts on your     \
network to you.  It would be easy to make it monitor other sources of   \
data, too.  (Processes?  Active network connections?  CPU usage per     \
user?)  Written by Stephen Martin.

*hacks.t3d.name: T3D
*hacks.t3d.documentation:                                               \
This draws a working analog clock composed of floating, throbbing       \
bubbles.  Written by Bernd Paysan.

*hacks.penetrate.documentation:                                         \
This hack simulates the classic arcade game Missile Command.  Written   \
by Adam Miller.

*hacks.deluxe.documentation:                                            \
This draws a pulsing sequence of stars, circles, and lines.  It would   \
look better if it was faster, but as far as I can tell, there is no     \
way to make this be both: fast, and flicker-free.  Yet another reason   \
X sucks.  Written by Jamie Zawinski.

*hacks.compass.documentation:                                           \
This draws a compass, with all elements spinning about randomly, for    \
that ``lost and nauseous'' feeling. Written by Jamie Zawinski.

*hacks.squiral.documentation:                                           \
Draws a set of interacting, square-spiral-producing automata.  The      \
spirals grow outward until they hit something, then they go around      \
it.  Written by Jeff Epler.

*hacks.xflame.documentation:                                            \
Draws a simulation of pulsing fire.  It can also take an arbitrary      \
image and set it on fire too.  Written by Carsten Haitzler, hacked on   \
by many others.

*hacks.wander.documentation:                                            \
Draws a colorful random-walk, in various forms.  Written by Rick        \
Campbell.

*hacks.critical.documentation:                                          \
Draws a system of self-organizing lines.  It starts out as random       \
squiggles, but after a few iterations, order begins to appear.          \
Written by Martin Pool.

*hacks.phosphor.documentation:                                          \
Draws a simulation of an old terminal, with large pixels and            \
long-sustain phosphor. It can run any program as a source of the text   \
it displays.  Written by Jamie Zawinski.

*hacks.xmatrix.documentation:                                           \
A rendition of the text scrolls seen in the movie ``The Matrix.''       \
Written by Jamie Zawinski.

*hacks.petri.documentation:                                             \
This simulates colonies of mold growing in a petri dish.  Growing       \
colored circles overlap and leave spiral interference in their wake.    \
Written by Dan Bornstein.

*hacks.shadebobs.name: ShadeBobs
*hacks.shadebobs.documentation:                                         \
This draws smoothly-shaded oscilating oval patterns, that look          \
something like vapor trails or neon tubes.  Written by Shane Smit.

*hacks.ccurve.name: C Curve
*hacks.ccurve.documentation:                                            \
Generates self-similar linear fractals, including the classic ``C       \
Curve.''  Written by Rick Campbell.

*hacks.blaster.documentation:                                           \
Draws a simulation of flying space-combat robots (cleverly disguised    \
as colored circles) doing battle in front of a moving star field.       \
Written by Jonathan Lin.

*hacks.bumps.documentation:                                             \
A bit like `Spotlight', except that instead of merely exposing part     \
of your desktop, it creates a bump map from it.  Basically, it          \
3D-izes a roaming section of your desktop, based on color intensity.    \
Written by Shane Smit.

*hacks.xteevee.name: XTeeVee
*hacks.xteevee.documentation:                                           \
XTeeVee simulates various television problems, including static,        \
loss of vertical hold, and a test pattern.  By Greg Knauss.

*hacks.xspirograph.name: XSpiroGraph
*hacks.xspirograph.documentation:                                       \
Simulates that pen-in-nested-plastic-gears toy from your childhood.     \
By Rohit Singh.

*hacks.nerverot.name: NerveRot
*hacks.nerverot.documentation:                                          \
Draws a rolling tube, composed of nervously vibrating squiggles.        \
By Dan Bornstein.

*hacks.webcollage.name: WebCollage
*hacks.webcollage.documentation:                                        \
This program makes collages out of random images pulled off of the      \
World Wide Web.  It finds these images by doing random web searches,    \
and then extracting images from the returned pages.  It can also be     \
set up to filter the images through the `VidWhacker' program, above,    \
which looks really great.                                               \
                                                                    \n\n\
(Note that most of the images it finds are text, and not pictures.      \
This is because most of the web is pictures of text.  Which is pretty   \
sad.)  Written by Jamie Zawinski.

*hacks.vidwhacker.name: VidWhacker
*hacks.vidwhacker.documentation:                                        \
This is actually just a shell script that grabs a frame of video from   \
the system's video input, and then uses some PBM filters (chosen at     \
random) to manipulate and recombine the video frame in various ways     \
(edge detection, subtracting the image from a rotated version of        \
itself, etc.)  Then it displays that image for a few seconds, and       \
does it again.  This works really well if you just feed broadcast       \
television into it.                                                     \
                                                                    \n\n\
Currently, the three lines of the script that actually grab the         \
source picture are SGI specific, but it should be trivial to adapt it   \
to work on other systems that can grab video (please send me the        \
changes if you do this...)

*hacks.rocks.documentation:                                             \
This draws an animation of flight through an asteroid field, with       \
changes in rotation and direction.  It can also display 3D              \
separations for red/blue glasses!  Mostly written by Jamie Zawinski.

*hacks.bubbles.documentation:                                           \
This simulates the kind of bubble formation that happens when water     \
boils:small bubbles appear, and as they get closer to each other,       \
they combine to form larger bubbles, which eventually pop.  Written     \
by James Macnicol.

*hacks.gears.documentation:                                             \
This draws a set of turning, interlocking gears, rotating in three      \
dimensions.  Another GL hack, by Danny Sung, Brian Paul, and Ed         \
Mackey.

*hacks.superquadrics.documentation:                                     \
Ed Mackey reports that he wrote the first version of this program in    \
BASIC on a Commodore 64 in 1987, as a 320x200 black and white           \
wireframe.  Now it is GL and has specular reflections.

*hacks.morph3d.name: Morph3D
*hacks.morph3d.documentation:                                           \
Another 3d shape-changing GL hack, by Marcelo Vianna.  It has the       \
same shiny-plastic feel as Superquadrics, as many computer-generated    \
objects do...

*hacks.cage.documentation:                                              \
This draws Escher's ``Impossible Cage,'' a 3d analog of a moebius       \
strip, and rotates it in three dimensions.  Written by Marcelo          \
Vianna.

*hacks.moebius.documentation:                                           \
Another M.  C.  Escher hack by Marcelo Vianna, this one draws           \
``Moebius Strip II,'' a GL image of ants walking along the surface of   \
a moebius strip.

*hacks.stairs.documentation:                                            \
by Marcelo Vianna's third Escher GL hack, this one draws an             \
``infinite'' staircase.

*hacks.pipes.documentation:                                             \
If you've ever been in the same room with a Windows NT machine,         \
you've probably seen this GL hack.  This version is by Marcelo          \
Vianna.

*hacks.sproingies.documentation:                                        \
Q-Bert meets Marble Madness!  Written by Ed Mackey.

*hacks.rubik.documentation:                                             \
Draws a Rubik's Cube that rotates in three dimensions and repeatedly    \
shuffles and solves itself.  Another fine GL hack by Marcelo Vianna.

*hacks.atlantis.documentation:                                          \
This is xfishtank writ large: a GL animation of a number of sharks,     \
dolphins, and whales.  The swimming motions are great. Originally       \
written by Mark Kilgard.

*hacks.lament.documentation:                                            \
Animates a simulation of Lemarchand's Box, repeatedly solving itself.   \
Requires OpenGL, and a machine with fast hardware support for texture   \
maps.  Warning: occasionally opens doors.  Written by Jamie Zawinski.

*hacks.bubble3d.name: Bubble3D
*hacks.bubble3d.documentation:                                          \
Draws a stream of rising, undulating 3D bubbles, rising toward the      \
top of the screen, with nice specular reflections. Written by Richard   \
Jones.

*hacks.glplanet.name: GLPlanet
*hacks.glplanet.documentation:                                          \
Draws a planet bouncing around in space.  Written by David Konerding.   \
The built-in image is a map of the earth (extracted from `xearth'),     \
but you can wrap any texture around the sphere, e.g., the planetary     \
textures that come with `ssystem'.

*hacks.pulsar.documentation:                                            \
Draws some intersecting planes, making use of alpha blending, fog,      \
textures, and mipmaps, plus a ``frames per second'' meter so that you   \
can tell how fast your graphics card is...  Requires OpenGL.  Written   \
by David Konerding.

*hacks.extrusion.documentation:                                         \
Draws various rotating extruded shapes that twist around, lengthen,     \
and turn inside out.  Created by David Konerding from the samples       \
that come with the GL Extrusion library by Linas Vepstas.

*hacks.sierpinski3d.name: Sierpinski3D
*hacks.sierpinski3d.documentation:                                      \
This draws the three-dimensional variant of the recursive Sierpinski    \
triangle fractal, using GL.  Written by Tim Robinson and Jamie Zawinski.

*hacks.ripples.documentation:                                           \
This draws rippling interference patterns like splashing water.         \
With the -water option, it manipulates your desktop image to look       \
like something is dripping into it.  Written by Tom Hammersley.

*hacks.gflux.name: GFlux
*hacks.gflux.documentation:                                             \
Draws a rippling waves on a rotating wireframe grid, using GL.          \
Written by Josiah Pease.

*hacks.xrayswarm.name: XRaySwarm
*hacks.xrayswarm.documentation:                                         \
Draws a few swarms of critters flying around the screen, with nicely    \
faded color trails behind them.  Written by Chris Leger.


!=============================================================================
!
! Documentation for some programs that are not bundled with XScreenSaver
!
!=============================================================================

*hacks.xdaliclock.name: XDaliClock
*hacks.xdaliclock.documentation:                                        \
XDaliClock draws a large digital clock, the numbers of which change by  \
``melting'' into their new shapes.  Written by Jamie Zawinski.  This    \
is not included with the XScreenSaver package, but if you don't have    \
it already, you can find it at <http://www.jwz.org/xdaliclock/>.

*hacks.xearth.documentation:                                            \
XEarth draws an image of the Earth, as seen from your favorite vantage  \
point in space, correctly shaded for the current position of the Sun.   \
Written by Kirk Johnson.  This is not included with the XScreenSaver    \
package, but if you don't have it already, you can find it at           \
<http://www.cs.colorado.edu/~tuna/xearth/>.

*hacks.ssystem.name: SSystem
*hacks.ssystem.documentation:                                           \
SSystem is a GL Solar System simulator.  It simulates flybys of Sun,    \
the nine planets and a few major satellites, with four camera modes.    \
Written by Raul Alonso.  This is not included with the XScreenSaver     \
package, but if you don't have it already, you can find it at           \
<http://www1.las.es/~amil/ssystem/>.

*hacks.xmountains.documentation:                                        \
XMountains generates realistic-looking fractal terrains of snow-capped  \
mountains near water, with either a top view or a side view.            \
Written by Stephen Booth.  This is not included with the XScreenSaver   \
package, but if you don't have it already, you can find it at           \
<http://www.epcc.ed.ac.uk/~spb/xmountains/>.                            \
                                                                    \n\n\
Be sure to compile it with -DVROOT or it won't work right when launched \
by the xscreensaver daemon.

*hacks.xaos.name: XaoS
*hacks.xaos.documentation:                                              \
XaoS generates fast fly-through animations of the Mandelbrot and other  \
fractal sets.  Written by Thomas Marsh and Jan Hubicka.    This is not  \
included with the XScreenSaver package, but if you don't have it        \
already, you can find it at <http://limax.paru.cas.cz/~hubicka/XaoS/>.

*hacks.xfishtank.name: XFishTank
*hacks.xfishtank.documentation:                                         \
Fish!  This is not included with the XScreenSaver package, but if you   \
don't have it already, you can find it at                               \
<http://metalab.unc.edu/pub/Linux/X11/demos/>.

*hacks.xsnow.documentation:                                             \
Draws falling snow and the occasional tiny Santa.  By Rick Jansen.      \
You can find it at <http://www.euronet.nl/~rja/Xsnow/>.

*hacks.goban.documentation:                                             \
Replays historical games of go (aka wei-chi and baduk) on the screen.   \
By Scott Draves.  You can find it at <http://www.draves.org/goban/>.

*hacks.electricsheep.name: ElectricSheep
*hacks.electricsheep.documentation:                                     \
ElectricSheep is an xscreensaver module that displays mpeg video of     \
an animated fractal flame.  In the background, it contributes render    \
cycles to the next animation.  Periodically it uploades completed       \
frames to the server, where they are compressed for distribution to     \
all clients.                                                            \
                                                                    \n\n\
This program is recommended only if you have a high bandwidth           \
connection to the Internet.                                             \
                                                                    \n\n\
By Scott Draves.  You can find it at <http://www.electricsheep.org/>.   \
See that web site for configuration information.

! (xrdb prevention kludge: whole file) */