Home » Archimedes archive » Micro User » MU 1991-07.adf » PD-Stuff » Fractals/!MBrot/!Help/Readme
Fractals/!MBrot/!Help/Readme
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Micro User » MU 1991-07.adf » PD-Stuff |
| Filename: | Fractals/!MBrot/!Help/Readme |
| Read OK: | ✔ |
| File size: | 25AE bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
________________________________________________________________________
/ \
| !Mbrot v1.0: Mandelbrot Set Plotter |
| 28 April 1991 |
| by Mike Curnow |
\________________________________________________________________________/
Introduction
============
!Mbrot is a fast desktop Mandelbrot plotter that provides virtually
unlimited exploration of the Mandelbrot set. It provides full zooming,
restart and colouring facilities, and multi-tasks where appropriate. It uses
fast integer arithmetic to magnifications of around 20,000, then switches to
floating point there on. The image is displayed in 256 colours.
A brief guide to usage.
----------------------
Double click on the filer icon, then click on the icon-bar icon to display
the initial Mandelbrot set. Press Menu and then select Zoom. Use the left
mouse button to zoom in, and the middle button to zoom out. Press the right
button to start the redraw operation. At low magnifications the machine will
be locked until the redraw is complete (usually less than 3 minutes).
At high magnifications (you will notice the dramatic speed decrease) you can
return to the desktop while plotting continues, by pressing Menu twice and
selecting Hide.
The Display menu option gives access to previous images and various colour
modifications, whilst Hide temporarily closes the window. Note however that
when in full screen mode that the desktop is still active - its just that
the other windows are hidden.
The screen can be saved by using the Save option. Saved drawings may be
reloaded by simply dragging the saved sprite onto the !Mbrot icon, allowing
zooming to re-commence.
Full Operation Information
==========================
!Mbrot requires a considerable amount of storage : 300k for itself, 160k for
a Mode 15 screen and 60k for the shared C library, so be prepared. The
Mandelbrot plot is displayed as a full screen window which may be hidden at
any time by selecting Hide from the menu.
Automatic Last Display Save
---------------------------
All operations which modify the Mandelbrot image will save the current
display in memory, except for Invert which is self cancelling. The prior
image may be recalled by selecting Previous from the menu. Thus you can zoom
in to inspect an area, then quickly back out to the previous display. To
maintain further images use the load and save facilities.
The Menu Options
----------------
The menu options are available from the icon bar or from the full screen
window. All options except Zoom and Hide will work from the icon bar, though
obviously you will not see colour effects until you open the window.
Pressing Adjust instead of Select will keep the menu open.
ZOOM: Activates the zoom box and re-plotting process. Moving the mouse moves
the box, even beyond the edge of the screen. The mouse buttons have the
following effect:
Left: Zoom in
Middle: Zoom out (max. 2 times magnification)
Right: Start zoom
On pressing Start the new display will be drawn. For magnifications up to
20,000 times it is not possible to interrupt the re-draw. For higher
magnifications, the plotting will commence in dedicated mode (which is the
fastest) until you press Menu, at which time desktop mode is re-entered. The
plotting will continue in the background and the screen will not be
automatically updated.
To see the state of the display when in background mode, Hide the screen
then click on the icon bar as normal. Dedicated mode will be re-entered and
the screen will be drawn in synch with the plotting. If you are in desktop
mode when plotting completes, !Mbrot will automatically display the
completed screen by opening a full screen window.
Background plotting allows you to carry on using other desktop applications,
though you will notice some reduction in speed (Nb. entering commands such
as *BASIC will halt all desktop operations!). Background plotting will take
much longer, so if you leave the machine it is best to re-enter dedicated
mode by clicking on the icon bar to re-open the Mandelbrot window.
FACTORS: leads to a submenu which displays and allows entry of the variables
that are used to create the Mandelbrot plot.
XY : shows the X and Y values of each corner of the screen.
These can only be modified by Zooming.
Levels : the number of iterations before stopping each calculation.
Higher numbers will take longer but show more detail at higher
magnifications. Values >256 will cause colour wrap around.
DISPLAY: leads to a submenu allowing alteration of the current displayed
image.
Hide : closes the full screen window. It may be re-opened by
clicking on the iconbar.
Invert : Inverts the colours used for the display. This can improve
looks. Selecting invert again restores the colours.
B&W : converts the display to Black & White. This will show how the
image will look if printed.
Grey : converts the display to 12 grey levels, which can produce a
better printed image than B&W. Use Invert before grey to
change the order of grey tones.
Previous : restores the previous image, ie. to the state before the last
image alteration (except Invert).
Initial : restores the display to the initial Mandelbrot set.
SAVE: allows the current Mandelbrot image and parameters to be saved as a
sprite. The name of the sprite can be over typed before selecting. The
default value of <MbrotS$Dir> is the directory in which !Mbrot resides. You
can change this by editing the !Run file within !Mbrot. A "Save As" icon is
not presented since this would be of little use in full screen mode.
!Mbrot sprites are totally compatible with !Paint, !Draw etc. They contain
additional information however to allow them to be re-used within !Mbrot.
Thus you can save a position and carry on examination some time later. To
reload a Mandelbrot sprite simply drag it onto the !Mbrot icon - a full
screen window will be opened to display the image.
Note that !Mbrot sprites are saved in Mode 13 format though they are
displayed in Mode 15 for desktop ease of use. !Mbrot sprites use the AFG1
sprite format for storing parameter information : contact AFG for further
details on AFG1.
QUIT: Exits !Mbrot. No warning is given if a redraw is in progress our if
you have not saved the current position.
Background Operation Notes
--------------------------
Background redraw is automatically cancelled if any of the image alteration
menu options are selected, or if a new sprite is loaded. The normal way to
stop a re-draw is to select Previous.
Changing any of the Mandelbrot factors during re-draw will have immediate
effect.
Resuming A Plot
---------------
A saved Mandelbrot sprite can be used as the new starting point for
investigation by simply dragging it's filer icon onto the !Mbrot icon. Only
!Mbrot sprites are accepted.
Mandelbrot Algorithm
--------------------
The routine used to calculate the image is as follows:
finished=FALSE
iterno=0
u=0
v=0
do
uu=u*u
if (uu<4.0) then
vv=v*v
if (vv<4.0 AND (uu+vv)<4.0) then
r=u*v
v=r+r-y
u=uu-vv+x
iterno=iternno+1
else finished=TRUE
else finished=TRUE
while (iterno<MaxIt AND NOT finished)
if (finished) then colour=256-iterno
else colour=0
where x and y are calculated for each pixel displayed, and MaxIt is the
maximum iterations before plotting. Note the use of inverse colours. These
are plotted directly to the screen (ie. the physical colours) and are
plotted this way for better effect.
Programming
-----------
!Mbrot is written in C except for the integer plot routines (MandelAsm)
which are in ARM assembler for maximum speed. Contact me if you would like
to know how to call MandelAsm and use it within your own programs.
History
-------
1.00 April 1991 : Created and released for AFG launch within 2 weeks.
To come (a wish list):
Load a sprite from the menu.
Automatically update the save sprite name on a numerical basis.
Compressed sprite files.
Direct input of X & Y values.
Batch operation - ie. create a text file of co-ordinates, feed it into
!Mbrot, go to sleep, then come back to find loads of nice sprites on your
disk (this will definitely require sprite compression).
Many more image manipulation facilities.
A faster floating point routine (the speed difference is embarassing!).
I may consider a background integer routine, but I am the lucky owner of an
ARM-3 which does the integer plot in under 30 seconds, 5 seconds flat out!
Final Boring Copywright Notice
==============================
The copywright of this material belongs to Mike Curnow except for the !Help
application which belongs to J R�ling. This software may be passed on to
others as long as NO CHARGES ARE LEVIED except to cover costs.
Archimedes Fractal Group (AFG)
==============================
This software is part of the Archimedes Fractal Group collection. If you
have obtained this software outside of the AFG and would like to find out
more about Fractals on the Archimedes, contact me (the AFG administrator) at
the address below. Send a SAE and a disk to get a free AFG demo disk.
Mike Curnow,
30 Bowen Drive,
West Dulwich,
London
SE21 8PN
<<<< MAY THE CHAOS BE WITH YOU! >>>>
00000000 20 20 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f | ______________| 00000010 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 00000040 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 0a 20 2f 20 20 20 |__________. / | 00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00000090 20 20 20 20 20 5c 0a 7c 20 20 20 20 20 20 20 20 | \.| | 000000a0 20 20 20 20 20 20 20 20 21 4d 62 72 6f 74 20 76 | !Mbrot v| 000000b0 31 2e 30 3a 20 4d 61 6e 64 65 6c 62 72 6f 74 20 |1.0: Mandelbrot | 000000c0 53 65 74 20 50 6c 6f 74 74 65 72 20 20 20 20 20 |Set Plotter | 000000d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000000e0 20 20 7c 0a 7c 20 20 20 20 20 20 20 20 20 20 20 | |.| | 000000f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000100 20 20 20 32 38 20 41 70 72 69 6c 20 31 39 39 31 | 28 April 1991| 00000110 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000120 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 7c | || 00000130 0a 7c 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.| | 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000150 62 79 20 4d 69 6b 65 20 43 75 72 6e 6f 77 20 20 |by Mike Curnow | 00000160 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000170 20 20 20 20 20 20 20 20 20 20 20 20 7c 0a 20 5c | |. \| 00000180 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f |________________| * 000001c0 5f 5f 5f 5f 5f 5f 5f 5f 2f 20 0a 0a 49 6e 74 72 |________/ ..Intr| 000001d0 6f 64 75 63 74 69 6f 6e 0a 3d 3d 3d 3d 3d 3d 3d |oduction.=======| 000001e0 3d 3d 3d 3d 3d 0a 21 4d 62 72 6f 74 20 69 73 20 |=====.!Mbrot is | 000001f0 61 20 66 61 73 74 20 64 65 73 6b 74 6f 70 20 4d |a fast desktop M| 00000200 61 6e 64 65 6c 62 72 6f 74 20 70 6c 6f 74 74 65 |andelbrot plotte| 00000210 72 20 74 68 61 74 20 70 72 6f 76 69 64 65 73 20 |r that provides | 00000220 76 69 72 74 75 61 6c 6c 79 0a 75 6e 6c 69 6d 69 |virtually.unlimi| 00000230 74 65 64 20 65 78 70 6c 6f 72 61 74 69 6f 6e 20 |ted exploration | 00000240 6f 66 20 74 68 65 20 4d 61 6e 64 65 6c 62 72 6f |of the Mandelbro| 00000250 74 20 73 65 74 2e 20 49 74 20 70 72 6f 76 69 64 |t set. It provid| 00000260 65 73 20 66 75 6c 6c 20 7a 6f 6f 6d 69 6e 67 2c |es full zooming,| 00000270 0a 72 65 73 74 61 72 74 20 61 6e 64 20 63 6f 6c |.restart and col| 00000280 6f 75 72 69 6e 67 20 66 61 63 69 6c 69 74 69 65 |ouring facilitie| 00000290 73 2c 20 61 6e 64 20 6d 75 6c 74 69 2d 74 61 73 |s, and multi-tas| 000002a0 6b 73 20 77 68 65 72 65 20 61 70 70 72 6f 70 72 |ks where appropr| 000002b0 69 61 74 65 2e 20 49 74 20 75 73 65 73 0a 66 61 |iate. It uses.fa| 000002c0 73 74 20 69 6e 74 65 67 65 72 20 61 72 69 74 68 |st integer arith| 000002d0 6d 65 74 69 63 20 74 6f 20 6d 61 67 6e 69 66 69 |metic to magnifi| 000002e0 63 61 74 69 6f 6e 73 20 6f 66 20 61 72 6f 75 6e |cations of aroun| 000002f0 64 20 32 30 2c 30 30 30 2c 20 74 68 65 6e 20 73 |d 20,000, then s| 00000300 77 69 74 63 68 65 73 20 74 6f 0a 66 6c 6f 61 74 |witches to.float| 00000310 69 6e 67 20 70 6f 69 6e 74 20 74 68 65 72 65 20 |ing point there | 00000320 6f 6e 2e 20 54 68 65 20 69 6d 61 67 65 20 69 73 |on. 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Press Menu and| 000003f0 20 74 68 65 6e 20 73 65 6c 65 63 74 20 5a 6f 6f | then select Zoo| 00000400 6d 2e 20 55 73 65 20 74 68 65 20 6c 65 66 74 0a |m. Use the left.| 00000410 6d 6f 75 73 65 20 62 75 74 74 6f 6e 20 74 6f 20 |mouse button to | 00000420 7a 6f 6f 6d 20 69 6e 2c 20 61 6e 64 20 74 68 65 |zoom in, and the| 00000430 20 6d 69 64 64 6c 65 20 62 75 74 74 6f 6e 20 74 | middle button t| 00000440 6f 20 7a 6f 6f 6d 20 6f 75 74 2e 20 50 72 65 73 |o zoom out. Pres| 00000450 73 20 74 68 65 20 72 69 67 68 74 0a 62 75 74 74 |s the right.butt| 00000460 6f 6e 20 74 6f 20 73 74 61 72 74 20 74 68 65 20 |on to start the | 00000470 72 65 64 72 61 77 20 6f 70 65 72 61 74 69 6f 6e |redraw operation| 00000480 2e 20 41 74 20 6c 6f 77 20 6d 61 67 6e 69 66 69 |. At low magnifi| 00000490 63 61 74 69 6f 6e 73 20 74 68 65 20 6d 61 63 68 |cations the mach| 000004a0 69 6e 65 20 77 69 6c 6c 0a 62 65 20 6c 6f 63 6b |ine will.be lock| 000004b0 65 64 20 75 6e 74 69 6c 20 74 68 65 20 72 65 64 |ed until the red| 000004c0 72 61 77 20 69 73 20 63 6f 6d 70 6c 65 74 65 20 |raw is complete | 000004d0 28 75 73 75 61 6c 6c 79 20 6c 65 73 73 20 74 68 |(usually less th| 000004e0 61 6e 20 33 20 6d 69 6e 75 74 65 73 29 2e 0a 0a |an 3 minutes)...| 000004f0 41 74 20 68 69 67 68 20 6d 61 67 6e 69 66 69 63 |At high magnific| 00000500 61 74 69 6f 6e 73 20 28 79 6f 75 20 77 69 6c 6c |ations (you will| 00000510 20 6e 6f 74 69 63 65 20 74 68 65 20 64 72 61 6d | notice the dram| 00000520 61 74 69 63 20 73 70 65 65 64 20 64 65 63 72 65 |atic speed decre| 00000530 61 73 65 29 20 79 6f 75 20 63 61 6e 0a 72 65 74 |ase) you can.ret| 00000540 75 72 6e 20 74 6f 20 74 68 65 20 64 65 73 6b 74 |urn to the deskt| 00000550 6f 70 20 77 68 69 6c 65 20 70 6c 6f 74 74 69 6e |op while plottin| 00000560 67 20 63 6f 6e 74 69 6e 75 65 73 2c 20 62 79 20 |g continues, by | 00000570 70 72 65 73 73 69 6e 67 20 4d 65 6e 75 20 74 77 |pressing Menu tw| 00000580 69 63 65 20 61 6e 64 0a 73 65 6c 65 63 74 69 6e |ice and.selectin| 00000590 67 20 48 69 64 65 2e 0a 0a 54 68 65 20 44 69 73 |g Hide...The Dis| 000005a0 70 6c 61 79 20 6d 65 6e 75 20 6f 70 74 69 6f 6e |play menu option| 000005b0 20 67 69 76 65 73 20 61 63 63 65 73 73 20 74 6f | gives access to| 000005c0 20 70 72 65 76 69 6f 75 73 20 69 6d 61 67 65 73 | previous images| 000005d0 20 61 6e 64 20 76 61 72 69 6f 75 73 20 63 6f 6c | and various col| 000005e0 6f 75 72 0a 6d 6f 64 69 66 69 63 61 74 69 6f 6e |our.modification| 000005f0 73 2c 20 77 68 69 6c 73 74 20 48 69 64 65 20 74 |s, whilst Hide t| 00000600 65 6d 70 6f 72 61 72 69 6c 79 20 63 6c 6f 73 65 |emporarily close| 00000610 73 20 74 68 65 20 77 69 6e 64 6f 77 2e 20 4e 6f |s the window. No| 00000620 74 65 20 68 6f 77 65 76 65 72 20 74 68 61 74 0a |te however that.| 00000630 77 68 65 6e 20 69 6e 20 66 75 6c 6c 20 73 63 72 |when in full scr| 00000640 65 65 6e 20 6d 6f 64 65 20 74 68 61 74 20 74 68 |een mode that th| 00000650 65 20 64 65 73 6b 74 6f 70 20 69 73 20 73 74 69 |e desktop is sti| 00000660 6c 6c 20 61 63 74 69 76 65 20 2d 20 69 74 73 20 |ll active - its | 00000670 6a 75 73 74 20 74 68 61 74 0a 74 68 65 20 6f 74 |just that.the ot| 00000680 68 65 72 20 77 69 6e 64 6f 77 73 20 61 72 65 20 |her windows are | 00000690 68 69 64 64 65 6e 2e 0a 0a 54 68 65 20 73 63 72 |hidden...The scr| 000006a0 65 65 6e 20 63 61 6e 20 62 65 20 73 61 76 65 64 |een can be saved| 000006b0 20 62 79 20 75 73 69 6e 67 20 74 68 65 20 53 61 | by using the Sa| 000006c0 76 65 20 6f 70 74 69 6f 6e 2e 20 53 61 76 65 64 |ve option. Saved| 000006d0 20 64 72 61 77 69 6e 67 73 20 6d 61 79 20 62 65 | drawings may be| 000006e0 0a 72 65 6c 6f 61 64 65 64 20 62 79 20 73 69 6d |.reloaded by sim| 000006f0 70 6c 79 20 64 72 61 67 67 69 6e 67 20 74 68 65 |ply dragging the| 00000700 20 73 61 76 65 64 20 73 70 72 69 74 65 20 6f 6e | saved sprite on| 00000710 74 6f 20 74 68 65 20 21 4d 62 72 6f 74 20 69 63 |to the !Mbrot ic| 00000720 6f 6e 2c 20 61 6c 6c 6f 77 69 6e 67 0a 7a 6f 6f |on, allowing.zoo| 00000730 6d 69 6e 67 20 74 6f 20 72 65 2d 63 6f 6d 6d 65 |ming to re-comme| 00000740 6e 63 65 2e 0a 0a 46 75 6c 6c 20 4f 70 65 72 61 |nce...Full Opera| 00000750 74 69 6f 6e 20 49 6e 66 6f 72 6d 61 74 69 6f 6e |tion Information| 00000760 0a 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |.===============| 00000770 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 0a 21 4d 62 72 |===========.!Mbr| 00000780 6f 74 20 72 65 71 75 69 72 65 73 20 61 20 63 6f |ot requires a co| 00000790 6e 73 69 64 65 72 61 62 6c 65 20 61 6d 6f 75 6e |nsiderable amoun| 000007a0 74 20 6f 66 20 73 74 6f 72 61 67 65 20 3a 20 33 |t of storage : 3| 000007b0 30 30 6b 20 66 6f 72 20 69 74 73 65 6c 66 2c 20 |00k for itself, | 000007c0 31 36 30 6b 20 66 6f 72 0a 61 20 4d 6f 64 65 20 |160k for.a Mode | 000007d0 31 35 20 73 63 72 65 65 6e 20 61 6e 64 20 36 30 |15 screen and 60| 000007e0 6b 20 66 6f 72 20 74 68 65 20 73 68 61 72 65 64 |k for the shared| 000007f0 20 43 20 6c 69 62 72 61 72 79 2c 20 73 6f 20 62 | C library, so b| 00000800 65 20 70 72 65 70 61 72 65 64 2e 20 54 68 65 0a |e prepared. The.| 00000810 4d 61 6e 64 65 6c 62 72 6f 74 20 70 6c 6f 74 20 |Mandelbrot plot | 00000820 69 73 20 64 69 73 70 6c 61 79 65 64 20 61 73 20 |is displayed as | 00000830 61 20 66 75 6c 6c 20 73 63 72 65 65 6e 20 77 69 |a full screen wi| 00000840 6e 64 6f 77 20 77 68 69 63 68 20 6d 61 79 20 62 |ndow which may b| 00000850 65 20 68 69 64 64 65 6e 20 61 74 0a 61 6e 79 20 |e hidden at.any | 00000860 74 69 6d 65 20 62 79 20 73 65 6c 65 63 74 69 6e |time by selectin| 00000870 67 20 48 69 64 65 20 66 72 6f 6d 20 74 68 65 20 |g Hide from the | 00000880 6d 65 6e 75 2e 0a 0a 41 75 74 6f 6d 61 74 69 63 |menu...Automatic| 00000890 20 4c 61 73 74 20 44 69 73 70 6c 61 79 20 53 61 | Last Display Sa| 000008a0 76 65 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |ve.-------------| 000008b0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 41 |--------------.A| 000008c0 6c 6c 20 6f 70 65 72 61 74 69 6f 6e 73 20 77 68 |ll operations wh| 000008d0 69 63 68 20 6d 6f 64 69 66 79 20 74 68 65 20 4d |ich modify the M| 000008e0 61 6e 64 65 6c 62 72 6f 74 20 69 6d 61 67 65 20 |andelbrot image | 000008f0 77 69 6c 6c 20 73 61 76 65 20 74 68 65 20 63 75 |will save the cu| 00000900 72 72 65 6e 74 0a 64 69 73 70 6c 61 79 20 69 6e |rrent.display in| 00000910 20 6d 65 6d 6f 72 79 2c 20 65 78 63 65 70 74 20 | memory, except | 00000920 66 6f 72 20 49 6e 76 65 72 74 20 77 68 69 63 68 |for Invert which| 00000930 20 69 73 20 73 65 6c 66 20 63 61 6e 63 65 6c 6c | is self cancell| 00000940 69 6e 67 2e 20 54 68 65 20 70 72 69 6f 72 0a 69 |ing. The prior.i| 00000950 6d 61 67 65 20 6d 61 79 20 62 65 20 72 65 63 61 |mage may be reca| 00000960 6c 6c 65 64 20 62 79 20 73 65 6c 65 63 74 69 6e |lled by selectin| 00000970 67 20 50 72 65 76 69 6f 75 73 20 66 72 6f 6d 20 |g Previous from | 00000980 74 68 65 20 6d 65 6e 75 2e 20 54 68 75 73 20 79 |the menu. Thus y| 00000990 6f 75 20 63 61 6e 20 7a 6f 6f 6d 0a 69 6e 20 74 |ou can zoom.in t| 000009a0 6f 20 69 6e 73 70 65 63 74 20 61 6e 20 61 72 65 |o inspect an are| 000009b0 61 2c 20 74 68 65 6e 20 71 75 69 63 6b 6c 79 20 |a, then quickly | 000009c0 62 61 63 6b 20 6f 75 74 20 74 6f 20 74 68 65 20 |back out to the | 000009d0 70 72 65 76 69 6f 75 73 20 64 69 73 70 6c 61 79 |previous display| 000009e0 2e 20 54 6f 0a 6d 61 69 6e 74 61 69 6e 20 66 75 |. To.maintain fu| 000009f0 72 74 68 65 72 20 69 6d 61 67 65 73 20 75 73 65 |rther images use| 00000a00 20 74 68 65 20 6c 6f 61 64 20 61 6e 64 20 73 61 | the load and sa| 00000a10 76 65 20 66 61 63 69 6c 69 74 69 65 73 2e 0a 0a |ve facilities...| 00000a20 54 68 65 20 4d 65 6e 75 20 4f 70 74 69 6f 6e 73 |The Menu Options| 00000a30 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |.---------------| 00000a40 2d 0a 54 68 65 20 6d 65 6e 75 20 6f 70 74 69 6f |-.The menu optio| 00000a50 6e 73 20 61 72 65 20 61 76 61 69 6c 61 62 6c 65 |ns are available| 00000a60 20 66 72 6f 6d 20 74 68 65 20 69 63 6f 6e 20 62 | from the icon b| 00000a70 61 72 20 6f 72 20 66 72 6f 6d 20 74 68 65 20 66 |ar or from the f| 00000a80 75 6c 6c 20 73 63 72 65 65 6e 0a 77 69 6e 64 6f |ull screen.windo| 00000a90 77 2e 20 41 6c 6c 20 6f 70 74 69 6f 6e 73 20 65 |w. All options e| 00000aa0 78 63 65 70 74 20 5a 6f 6f 6d 20 61 6e 64 20 48 |xcept Zoom and H| 00000ab0 69 64 65 20 77 69 6c 6c 20 77 6f 72 6b 20 66 72 |ide will work fr| 00000ac0 6f 6d 20 74 68 65 20 69 63 6f 6e 20 62 61 72 2c |om the icon bar,| 00000ad0 20 74 68 6f 75 67 68 0a 6f 62 76 69 6f 75 73 6c | though.obviousl| 00000ae0 79 20 79 6f 75 20 77 69 6c 6c 20 6e 6f 74 20 73 |y you will not s| 00000af0 65 65 20 63 6f 6c 6f 75 72 20 65 66 66 65 63 74 |ee colour effect| 00000b00 73 20 75 6e 74 69 6c 20 79 6f 75 20 6f 70 65 6e |s until you open| 00000b10 20 74 68 65 20 77 69 6e 64 6f 77 2e 0a 50 72 65 | the window..Pre| 00000b20 73 73 69 6e 67 20 41 64 6a 75 73 74 20 69 6e 73 |ssing Adjust ins| 00000b30 74 65 61 64 20 6f 66 20 53 65 6c 65 63 74 20 77 |tead of Select w| 00000b40 69 6c 6c 20 6b 65 65 70 20 74 68 65 20 6d 65 6e |ill keep the men| 00000b50 75 20 6f 70 65 6e 2e 0a 0a 5a 4f 4f 4d 3a 20 41 |u open...ZOOM: A| 00000b60 63 74 69 76 61 74 65 73 20 74 68 65 20 7a 6f 6f |ctivates the zoo| 00000b70 6d 20 62 6f 78 20 61 6e 64 20 72 65 2d 70 6c 6f |m box and re-plo| 00000b80 74 74 69 6e 67 20 70 72 6f 63 65 73 73 2e 20 4d |tting process. 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Right: Sta| 00000c50 72 74 20 7a 6f 6f 6d 0a 0a 4f 6e 20 70 72 65 73 |rt zoom..On pres| 00000c60 73 69 6e 67 20 53 74 61 72 74 20 74 68 65 20 6e |sing Start the n| 00000c70 65 77 20 64 69 73 70 6c 61 79 20 77 69 6c 6c 20 |ew display will | 00000c80 62 65 20 64 72 61 77 6e 2e 20 46 6f 72 20 6d 61 |be drawn. For ma| 00000c90 67 6e 69 66 69 63 61 74 69 6f 6e 73 20 75 70 20 |gnifications up | 00000ca0 74 6f 0a 32 30 2c 30 30 30 20 74 69 6d 65 73 20 |to.20,000 times | 00000cb0 69 74 20 69 73 20 6e 6f 74 20 70 6f 73 73 69 62 |it is not possib| 00000cc0 6c 65 20 74 6f 20 69 6e 74 65 72 72 75 70 74 20 |le to interrupt | 00000cd0 74 68 65 20 72 65 2d 64 72 61 77 2e 20 46 6f 72 |the re-draw. For| 00000ce0 20 68 69 67 68 65 72 0a 6d 61 67 6e 69 66 69 63 | higher.magnific| 00000cf0 61 74 69 6f 6e 73 2c 20 74 68 65 20 70 6c 6f 74 |ations, the plot| 00000d00 74 69 6e 67 20 77 69 6c 6c 20 63 6f 6d 6d 65 6e |ting will commen| 00000d10 63 65 20 69 6e 20 64 65 64 69 63 61 74 65 64 20 |ce in dedicated | 00000d20 6d 6f 64 65 20 28 77 68 69 63 68 20 69 73 20 74 |mode (which is t| 00000d30 68 65 0a 66 61 73 74 65 73 74 29 20 75 6e 74 69 |he.fastest) unti| 00000d40 6c 20 79 6f 75 20 70 72 65 73 73 20 4d 65 6e 75 |l you press Menu| 00000d50 2c 20 61 74 20 77 68 69 63 68 20 74 69 6d 65 20 |, at which time | 00000d60 64 65 73 6b 74 6f 70 20 6d 6f 64 65 20 69 73 20 |desktop mode is | 00000d70 72 65 2d 65 6e 74 65 72 65 64 2e 20 54 68 65 0a |re-entered. The.| 00000d80 70 6c 6f 74 74 69 6e 67 20 77 69 6c 6c 20 63 6f |plotting will co| 00000d90 6e 74 69 6e 75 65 20 69 6e 20 74 68 65 20 62 61 |ntinue in the ba| 00000da0 63 6b 67 72 6f 75 6e 64 20 61 6e 64 20 74 68 65 |ckground and the| 00000db0 20 73 63 72 65 65 6e 20 77 69 6c 6c 20 6e 6f 74 | screen will not| 00000dc0 20 62 65 0a 61 75 74 6f 6d 61 74 69 63 61 6c 6c | be.automaticall| 00000dd0 79 20 75 70 64 61 74 65 64 2e 0a 0a 54 6f 20 73 |y updated...To s| 00000de0 65 65 20 74 68 65 20 73 74 61 74 65 20 6f 66 20 |ee the state of | 00000df0 74 68 65 20 64 69 73 70 6c 61 79 20 77 68 65 6e |the display when| 00000e00 20 69 6e 20 62 61 63 6b 67 72 6f 75 6e 64 20 6d | in background m| 00000e10 6f 64 65 2c 20 48 69 64 65 20 74 68 65 20 73 63 |ode, Hide the sc| 00000e20 72 65 65 6e 0a 74 68 65 6e 20 63 6c 69 63 6b 20 |reen.then click | 00000e30 6f 6e 20 74 68 65 20 69 63 6f 6e 20 62 61 72 20 |on the icon bar | 00000e40 61 73 20 6e 6f 72 6d 61 6c 2e 20 44 65 64 69 63 |as normal. 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Initial : | 00001580 72 65 73 74 6f 72 65 73 20 74 68 65 20 64 69 73 |restores the dis| 00001590 70 6c 61 79 20 74 6f 20 74 68 65 20 69 6e 69 74 |play to the init| 000015a0 69 61 6c 20 4d 61 6e 64 65 6c 62 72 6f 74 20 73 |ial Mandelbrot s| 000015b0 65 74 2e 0a 0a 0a 53 41 56 45 3a 20 61 6c 6c 6f |et....SAVE: allo| 000015c0 77 73 20 74 68 65 20 63 75 72 72 65 6e 74 20 4d |ws the current M| 000015d0 61 6e 64 65 6c 62 72 6f 74 20 69 6d 61 67 65 20 |andelbrot image | 000015e0 61 6e 64 20 70 61 72 61 6d 65 74 65 72 73 20 74 |and parameters t| 000015f0 6f 20 62 65 20 73 61 76 65 64 20 61 73 20 61 0a |o be saved as a.| 00001600 73 70 72 69 74 65 2e 20 54 68 65 20 6e 61 6d 65 |sprite. The name| 00001610 20 6f 66 20 74 68 65 20 73 70 72 69 74 65 20 63 | of the sprite c| 00001620 61 6e 20 62 65 20 6f 76 65 72 20 74 79 70 65 64 |an be over typed| 00001630 20 62 65 66 6f 72 65 20 73 65 6c 65 63 74 69 6e | before selectin| 00001640 67 2e 20 54 68 65 0a 64 65 66 61 75 6c 74 20 76 |g. The.default v| 00001650 61 6c 75 65 20 6f 66 20 3c 4d 62 72 6f 74 53 24 |alue of <MbrotS$| 00001660 44 69 72 3e 20 69 73 20 74 68 65 20 64 69 72 65 |Dir> is the dire| 00001670 63 74 6f 72 79 20 69 6e 20 77 68 69 63 68 20 21 |ctory in which !| 00001680 4d 62 72 6f 74 20 72 65 73 69 64 65 73 2e 20 59 |Mbrot resides. Y| 00001690 6f 75 0a 63 61 6e 20 63 68 61 6e 67 65 20 74 68 |ou.can change th| 000016a0 69 73 20 62 79 20 65 64 69 74 69 6e 67 20 74 68 |is by editing th| 000016b0 65 20 21 52 75 6e 20 66 69 6c 65 20 77 69 74 68 |e !Run file with| 000016c0 69 6e 20 21 4d 62 72 6f 74 2e 20 41 20 22 53 61 |in !Mbrot. A "Sa| 000016d0 76 65 20 41 73 22 20 69 63 6f 6e 20 69 73 0a 6e |ve As" icon is.n| 000016e0 6f 74 20 70 72 65 73 65 6e 74 65 64 20 73 69 6e |ot presented sin| 000016f0 63 65 20 74 68 69 73 20 77 6f 75 6c 64 20 62 65 |ce this would be| 00001700 20 6f 66 20 6c 69 74 74 6c 65 20 75 73 65 20 69 | of little use i| 00001710 6e 20 66 75 6c 6c 20 73 63 72 65 65 6e 20 6d 6f |n full screen mo| 00001720 64 65 2e 0a 0a 21 4d 62 72 6f 74 20 73 70 72 69 |de...!Mbrot spri| 00001730 74 65 73 20 61 72 65 20 74 6f 74 61 6c 6c 79 20 |tes are totally | 00001740 63 6f 6d 70 61 74 69 62 6c 65 20 77 69 74 68 20 |compatible with | 00001750 21 50 61 69 6e 74 2c 20 21 44 72 61 77 20 65 74 |!Paint, !Draw et| 00001760 63 2e 20 54 68 65 79 20 63 6f 6e 74 61 69 6e 0a |c. 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