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P/AText1
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 » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_18.ADF |
| Filename: | P/AText1 |
| Read OK: | ✔ |
| File size: | 1A23 bytes |
| Load address: | 41204556 |
| Exec address: | 74786554 |
File contents
Autostereogram Generator
An autostereogram is a repeating pattern of dots which
reveals aconvincing 3-dimensional illusion if viewed
correctly. They have becomepopularly known as "Magic Eye"
pictures after the recent series of books,and can also be
found on posters in art shops. They are generated using
computer programs, so I set about writing a program to produce
them on theElectron.
I found a simple routine to do this, in the New
Scientist magazinelast year, written in the "C" programming
language, and understood enoughof it to write a version in
BASIC. Unfortunately, this took over 4 hoursto run, and was
only capable of producing images of very simple shapes, soit
soon became evident that a machine code version was needed. I
have nowwritten a version which can produce virtually any
image, and never takesmore than 45 minutes to run (it will
often run in under 10). I admit thisis still slow - the
program is held up by needing to use BASIC's RNDfunction to
generate random numbers.
To produce an autostereogram, you will need a picture,
to supplythe 3-D image that you will see. This can be a
screen file in any graphicsmode (0,1,2,4,5), but must have a
very clear outline, particularly on thefirst one you try. The
colours of the picture are used to tell the programhow far in
front of the page each part of the image will appear - so
don'tuse them to make the picture look pretty or realistic.
There is no conceptof colour in the illusions themselves.
If the picture is fairly simple, you can draw it just
using BASIC'sgrapics commands, and PLOT 85 to fill areas with
colour, then save itusing "*SAVE <filename> 3000 8000" for a
MODE 0,1 or 2 screen, or "*SAVE<filename> 5800 8000" for a
MODE 4 or 5 screen. However, it is probablyeasier to use an
art program such as Elkpaint (Electon User, October1989). You
will find a copy of this on the disc, with a couple of minor
improvements made to the load/save routine. The keys are as
follows:
Z,X,*,? : Move cursor
S : Store screen in memory
0-3 : Choose colour
U : Swap to stored screen
SHIFT+1-6 : Choose speed
T : Text
B : Rubberband
Q+W : Clear screen
C : Circle
K : Save screen
E : Ellipse
L : Load screen
R : Rectangle
M : Magnify (cursors scroll view)
A then 1-5 : Brush mode
F : Fill
P : Cut + paste ( use space bar to fix area to cut,
drag box to new position, press Return, then:
Space for a normal copy
H : horizontal flip
V : vertical flip
R : rotate (Z and X rotate about bottom
left corner, then space to fix)
Space : Confirm/fix/draw in brush and magnify modes
Return : Exit brush/magnify modes
When you have a picture ready, run the autostereogram
generator.You will first need to enter the filename of the
source picture, and itsmode (this will be 5 if you used
Elkpaint). Next, enter the filename youwish to save the
autostereogram under, and its mode (0 or 4). The dot
resolution in mode 0 is twice that in mode 4, but in my
opinion, theimages are easier to see in mode 4. They are also
much quicker to producein mode 4.
Next you must enter the "eye separation". This will be
the distancebetween the repeating patterns on the page, and
hence relates to theamount you have to cross your eyes to see
the illusion (if you use mysmall screen dump, this will be in
millimetres). I find it easiest to seethe images if I use an
eye separation of about 20, though this is muchless than in
most commercial autostereograms.
Next, you will be asked to enter an "elevation number"
for eachlogical colour used in the source picture. This is a
measure of how far infront of the page each part of the image
will appear. The higher thenumber, the more the illusion
stands out, so you should enter 0 for thebackground colour. I
use a value of 4 for most images, though you can varythis
from about 2 to 10 to get a good 3-D effect. It is important
that youremember which logical colours you used for which
parts of the picture. Ifyou use mode 0, you should double the
values mentioned above (which referto mode 4). Similarly, if
you alter the eye separation, you should changethe elevation
numbers in approximately the same ratio.
Finally, you will be asked if you want a printed copy.
I havewritten my own single-shade screen dump for this
purpose. This must besaved in the same directory as the
autostereogram generator, under thefilename "ScrDump" (sorry
about the total lack of meaningful labels andvariable names
in this program!). You may prefer to use the dump from
"Diagram", which I have also improved. This is twice as fast
as mine, andthe same shape, but is 50% wider, filling the
full width of the carriage.This machine code program is saved
as "UCODE". There is an option toselect between these two
dumps (small and large respectively).
Now just sit back and wait for the result. This could
take up to 45minutes if you are using mode 0, so be patient
if the computer appears tobe doing nothing for a long period.
All these parameters will sound rather complicated if
you havenever actually seen an autostereogram before, but
don't worry - just usemy suggested values to get you started.
Then you can try varying themlater, one at a time, to see the
effects.
You may be able to see the effect on your TV/monitor
screen if itis not too flickery, though it is generally
easier on paper. My preferredmethod is to stare blankly at
the page, and slowly refocus my eyes untiltwo columns of the
repeating pattern appear to merge into one. Then, ifyou can
hold your focus long enough on the merged pattern, the image
should lift out.
Other people prefer the following method: Hold the
paper againstyour face, and stare through it blankly. Slowly
move the paper away fromyour face without altering your
focus, until the image appears, then waituntil it becomes
clear. You will have to concentrate very hard to prevent
yourself from refocusing on the image as it appears.
Another method is to place a reflective surface over
the page, andfocus on your reflection (a TV/monitor screen
might also work). I havenever found this method useful
myself.
00000000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000010 20 41 75 74 6f 73 74 65 72 65 6f 67 72 61 6d 20 | Autostereogram | 00000020 47 65 6e 65 72 61 74 6f 72 0d 0d 20 20 20 20 20 |Generator.. | 00000030 20 20 41 6e 20 61 75 74 6f 73 74 65 72 65 6f 67 | An autostereog| 00000040 72 61 6d 20 69 73 20 61 20 72 65 70 65 61 74 69 |ram is a repeati| 00000050 6e 67 1a 20 70 61 74 74 65 72 6e 1a 20 6f 66 1a |ng. pattern. of.| 00000060 20 64 6f 74 73 20 77 68 69 63 68 20 0d 72 65 76 | dots which .rev| 00000070 65 61 6c 73 20 61 10 63 6f 6e 76 69 6e 63 69 6e |eals a.convincin| 00000080 67 1a 20 33 2d 64 69 6d 65 6e 73 69 6f 6e 61 6c |g. 3-dimensional| 00000090 1a 20 69 6c 6c 75 73 69 6f 6e 1a 20 69 66 20 76 |. illusion. if v| 000000a0 69 65 77 65 64 20 0d 63 6f 72 72 65 63 74 6c 79 |iewed .correctly| 000000b0 2e 20 54 68 65 79 20 68 61 76 65 20 62 65 63 6f |. They have beco| 000000c0 6d 65 10 70 6f 70 75 6c 61 72 6c 79 20 6b 6e 6f |me.popularly kno| 000000d0 77 6e 20 61 73 20 22 4d 61 67 69 63 1a 20 45 79 |wn as "Magic. Ey| 000000e0 65 22 20 0d 70 69 63 74 75 72 65 73 20 61 66 74 |e" .pictures aft| 000000f0 65 72 20 74 68 65 20 72 65 63 65 6e 74 20 73 65 |er the recent se| 00000100 72 69 65 73 20 6f 66 20 62 6f 6f 6b 73 2c 10 61 |ries of books,.a| 00000110 6e 64 20 63 61 6e 20 61 6c 73 6f 20 62 65 20 0d |nd can also be .| 00000120 66 6f 75 6e 64 1a 20 6f 6e 1a 20 70 6f 73 74 65 |found. on. poste| 00000130 72 73 1a 20 69 6e 20 61 72 74 20 73 68 6f 70 73 |rs. in art shops| 00000140 2e 20 54 68 65 79 20 61 72 65 20 67 65 6e 65 72 |. They are gener| 00000150 61 74 65 64 20 75 73 69 6e 67 10 0d 63 6f 6d 70 |ated using..comp| 00000160 75 74 65 72 20 70 72 6f 67 72 61 6d 73 2c 20 73 |uter programs, s| 00000170 6f 20 49 20 73 65 74 20 61 62 6f 75 74 20 77 72 |o I set about wr| 00000180 69 74 69 6e 67 20 61 20 70 72 6f 67 72 61 6d 20 |iting a program | 00000190 74 6f 20 70 72 6f 64 75 63 65 20 0d 74 68 65 6d |to produce .them| 000001a0 20 6f 6e 20 74 68 65 10 45 6c 65 63 74 72 6f 6e | on the.Electron| 000001b0 2e 0d 20 20 20 20 20 20 20 49 20 66 6f 75 6e 64 |.. I found| 000001c0 20 61 20 73 69 6d 70 6c 65 20 72 6f 75 74 69 6e | a simple routin| 000001d0 65 1a 20 74 6f 20 64 6f 20 74 68 69 73 2c 20 69 |e. to do this, i| 000001e0 6e 20 74 68 65 20 4e 65 77 20 0d 53 63 69 65 6e |n the New .Scien| 000001f0 74 69 73 74 20 6d 61 67 61 7a 69 6e 65 10 6c 61 |tist magazine.la| 00000200 73 74 20 79 65 61 72 2c 20 77 72 69 74 74 65 6e |st year, written| 00000210 20 69 6e 20 74 68 65 20 22 43 22 1a 20 70 72 6f | in the "C". pro| 00000220 67 72 61 6d 6d 69 6e 67 20 0d 6c 61 6e 67 75 61 |gramming .langua| 00000230 67 65 2c 20 61 6e 64 20 75 6e 64 65 72 73 74 6f |ge, and understo| 00000240 6f 64 20 65 6e 6f 75 67 68 10 6f 66 20 69 74 20 |od enough.of it | 00000250 74 6f 20 77 72 69 74 65 20 61 20 76 65 72 73 69 |to write a versi| 00000260 6f 6e 20 69 6e 1a 20 0d 42 41 53 49 43 2e 1a 20 |on in. .BASIC.. | 00000270 55 6e 66 6f 72 74 75 6e 61 74 65 6c 79 2c 20 74 |Unfortunately, t| 00000280 68 69 73 20 74 6f 6f 6b 20 6f 76 65 72 20 34 20 |his took over 4 | 00000290 68 6f 75 72 73 10 74 6f 20 72 75 6e 2c 20 61 6e |hours.to run, an| 000002a0 64 20 77 61 73 20 0d 6f 6e 6c 79 20 63 61 70 61 |d was .only capa| 000002b0 62 6c 65 20 6f 66 20 70 72 6f 64 75 63 69 6e 67 |ble of producing| 000002c0 20 69 6d 61 67 65 73 20 6f 66 20 76 65 72 79 20 | images of very | 000002d0 73 69 6d 70 6c 65 20 73 68 61 70 65 73 2c 20 73 |simple shapes, s| 000002e0 6f 10 69 74 20 0d 73 6f 6f 6e 20 62 65 63 61 6d |o.it .soon becam| 000002f0 65 20 65 76 69 64 65 6e 74 20 74 68 61 74 20 61 |e evident that a| 00000300 20 6d 61 63 68 69 6e 65 20 63 6f 64 65 20 76 65 | machine code ve| 00000310 72 73 69 6f 6e 1a 20 77 61 73 20 6e 65 65 64 65 |rsion. was neede| 00000320 64 2e 20 49 20 0d 68 61 76 65 20 6e 6f 77 10 77 |d. I .have now.w| 00000330 72 69 74 74 65 6e 20 61 20 76 65 72 73 69 6f 6e |ritten a version| 00000340 20 77 68 69 63 68 20 63 61 6e 20 70 72 6f 64 75 | which can produ| 00000350 63 65 20 76 69 72 74 75 61 6c 6c 79 20 61 6e 79 |ce virtually any| 00000360 20 0d 69 6d 61 67 65 2c 20 61 6e 64 1a 20 20 6e | .image, and. n| 00000370 65 76 65 72 20 74 61 6b 65 73 10 6d 6f 72 65 20 |ever takes.more | 00000380 74 68 61 6e 20 34 35 20 6d 69 6e 75 74 65 73 20 |than 45 minutes | 00000390 74 6f 20 72 75 6e 20 28 69 74 20 77 69 6c 6c 20 |to run (it will | 000003a0 0d 6f 66 74 65 6e 20 72 75 6e 20 69 6e 1a 20 75 |.often run in. u| 000003b0 6e 64 65 72 20 31 30 29 2e 20 49 20 61 64 6d 69 |nder 10). I admi| 000003c0 74 20 74 68 69 73 10 69 73 1a 20 73 74 69 6c 6c |t this.is. still| 000003d0 1a 20 73 6c 6f 77 20 2d 20 74 68 65 20 0d 70 72 |. slow - the .pr| 000003e0 6f 67 72 61 6d 20 69 73 20 68 65 6c 64 20 75 70 |ogram is held up| 000003f0 20 62 79 20 6e 65 65 64 69 6e 67 20 74 6f 1a 20 | by needing to. | 00000400 75 73 65 1a 20 42 41 53 49 43 27 73 1a 20 20 52 |use. BASIC's. R| 00000410 4e 44 10 66 75 6e 63 74 69 6f 6e 20 74 6f 20 0d |ND.function to .| 00000420 67 65 6e 65 72 61 74 65 20 72 61 6e 64 6f 6d 20 |generate random | 00000430 6e 75 6d 62 65 72 73 2e 0d 20 20 20 20 20 20 20 |numbers.. | 00000440 54 6f 20 70 72 6f 64 75 63 65 20 61 6e 20 61 75 |To produce an au| 00000450 74 6f 73 74 65 72 65 6f 67 72 61 6d 2c 20 79 6f |tostereogram, yo| 00000460 75 1a 20 77 69 6c 6c 1a 20 6e 65 65 64 1a 20 61 |u. will. need. a| 00000470 20 70 69 63 74 75 72 65 2c 20 0d 74 6f 20 73 75 | picture, .to su| 00000480 70 70 6c 79 10 74 68 65 20 33 2d 44 20 69 6d 61 |pply.the 3-D ima| 00000490 67 65 20 74 68 61 74 20 79 6f 75 20 77 69 6c 6c |ge that you will| 000004a0 20 73 65 65 2e 20 54 68 69 73 20 63 61 6e 20 62 | see. This can b| 000004b0 65 20 61 20 0d 73 63 72 65 65 6e 20 66 69 6c 65 |e a .screen file| 000004c0 20 69 6e 20 61 6e 79 20 67 72 61 70 68 69 63 73 | in any graphics| 000004d0 10 6d 6f 64 65 20 28 30 2c 31 2c 32 2c 34 2c 35 |.mode (0,1,2,4,5| 000004e0 29 2c 20 62 75 74 20 6d 75 73 74 20 68 61 76 65 |), but must have| 000004f0 20 61 20 0d 76 65 72 79 20 63 6c 65 61 72 1a 20 | a .very clear. | 00000500 6f 75 74 6c 69 6e 65 2c 20 70 61 72 74 69 63 75 |outline, particu| 00000510 6c 61 72 6c 79 20 6f 6e 20 74 68 65 10 66 69 72 |larly on the.fir| 00000520 73 74 20 6f 6e 65 20 79 6f 75 20 74 72 79 2e 20 |st one you try. | 00000530 54 68 65 20 0d 63 6f 6c 6f 75 72 73 20 6f 66 20 |The .colours of | 00000540 74 68 65 20 70 69 63 74 75 72 65 20 61 72 65 20 |the picture are | 00000550 75 73 65 64 20 74 6f 20 74 65 6c 6c 20 74 68 65 |used to tell the| 00000560 20 70 72 6f 67 72 61 6d 10 68 6f 77 20 66 61 72 | program.how far| 00000570 20 69 6e 20 0d 66 72 6f 6e 74 20 6f 66 20 74 68 | in .front of th| 00000580 65 20 70 61 67 65 20 65 61 63 68 20 70 61 72 74 |e page each part| 00000590 20 6f 66 20 74 68 65 20 69 6d 61 67 65 20 77 69 | of the image wi| 000005a0 6c 6c 20 61 70 70 65 61 72 20 2d 20 73 6f 20 0d |ll appear - so .| 000005b0 64 6f 6e 27 74 10 75 73 65 20 74 68 65 6d 20 74 |don't.use them t| 000005c0 6f 20 6d 61 6b 65 20 74 68 65 20 70 69 63 74 75 |o make the pictu| 000005d0 72 65 20 6c 6f 6f 6b 20 70 72 65 74 74 79 20 6f |re look pretty o| 000005e0 72 20 72 65 61 6c 69 73 74 69 63 2e 20 0d 54 68 |r realistic. .Th| 000005f0 65 72 65 20 69 73 20 6e 6f 20 63 6f 6e 63 65 70 |ere is no concep| 00000600 74 10 6f 66 20 63 6f 6c 6f 75 72 20 69 6e 20 74 |t.of colour in t| 00000610 68 65 20 69 6c 6c 75 73 69 6f 6e 73 20 74 68 65 |he illusions the| 00000620 6d 73 65 6c 76 65 73 2e 0d 20 20 20 20 20 20 20 |mselves.. | 00000630 49 66 20 74 68 65 20 70 69 63 74 75 72 65 20 69 |If the picture i| 00000640 73 20 66 61 69 72 6c 79 20 73 69 6d 70 6c 65 2c |s fairly simple,| 00000650 20 79 6f 75 20 63 61 6e 20 64 72 61 77 20 69 74 | you can draw it| 00000660 20 6a 75 73 74 20 0d 75 73 69 6e 67 20 42 41 53 | just .using BAS| 00000670 49 43 27 73 10 67 72 61 70 69 63 73 20 63 6f 6d |IC's.grapics com| 00000680 6d 61 6e 64 73 2c 20 61 6e 64 20 50 4c 4f 54 20 |mands, and PLOT | 00000690 38 35 1a 20 74 6f 1a 20 66 69 6c 6c 1a 20 61 72 |85. to. fill. ar| 000006a0 65 61 73 1a 20 77 69 74 68 1a 20 0d 63 6f 6c 6f |eas. with. .colo| 000006b0 75 72 2c 20 74 68 65 6e 20 73 61 76 65 20 69 74 |ur, then save it| 000006c0 10 75 73 69 6e 67 20 22 2a 53 41 56 45 20 3c 66 |.using "*SAVE <f| 000006d0 69 6c 65 6e 61 6d 65 3e 20 33 30 30 30 20 38 30 |ilename> 3000 80| 000006e0 30 30 22 20 66 6f 72 20 61 20 0d 4d 4f 44 45 20 |00" for a .MODE | 000006f0 30 2c 31 20 6f 72 1a 20 32 1a 20 73 63 72 65 65 |0,1 or. 2. scree| 00000700 6e 2c 20 6f 72 20 22 2a 53 41 56 45 10 3c 66 69 |n, or "*SAVE.<fi| 00000710 6c 65 6e 61 6d 65 3e 1a 20 35 38 30 30 20 38 30 |lename>. 5800 80| 00000720 30 30 22 20 66 6f 72 20 61 20 0d 4d 4f 44 45 20 |00" for a .MODE | 00000730 34 20 6f 72 20 35 20 73 63 72 65 65 6e 2e 20 48 |4 or 5 screen. H| 00000740 6f 77 65 76 65 72 2c 20 69 74 1a 20 69 73 1a 20 |owever, it. is. | 00000750 70 72 6f 62 61 62 6c 79 10 65 61 73 69 65 72 20 |probably.easier | 00000760 74 6f 1a 20 75 73 65 1a 20 61 6e 1a 20 0d 61 72 |to. use. an. .ar| 00000770 74 1a 20 70 72 6f 67 72 61 6d 1a 20 73 75 63 68 |t. program. such| 00000780 1a 20 61 73 20 45 6c 6b 70 61 69 6e 74 20 28 45 |. as Elkpaint (E| 00000790 6c 65 63 74 6f 6e 20 55 73 65 72 2c 20 4f 63 74 |lecton User, Oct| 000007a0 6f 62 65 72 10 31 39 38 39 29 2e 20 59 6f 75 20 |ober.1989). You | 000007b0 0d 77 69 6c 6c 20 66 69 6e 64 20 61 20 63 6f 70 |.will find a cop| 000007c0 79 20 6f 66 20 74 68 69 73 1a 20 6f 6e 1a 20 74 |y of this. on. t| 000007d0 68 65 1a 20 64 69 73 63 2c 20 77 69 74 68 20 61 |he. disc, with a| 000007e0 20 63 6f 75 70 6c 65 20 6f 66 20 6d 69 6e 6f 72 | couple of minor| 000007f0 10 0d 69 6d 70 72 6f 76 65 6d 65 6e 74 73 20 6d |..improvements m| 00000800 61 64 65 20 74 6f 20 74 68 65 20 6c 6f 61 64 2f |ade to the load/| 00000810 73 61 76 65 20 72 6f 75 74 69 6e 65 2e 20 54 68 |save routine. Th| 00000820 65 20 6b 65 79 73 20 61 72 65 20 61 73 20 0d 66 |e keys are as .f| 00000830 6f 6c 6c 6f 77 73 3a 0d 0d 20 20 5a 2c 58 2c 2a |ollows:.. Z,X,*| 00000840 2c 3f 20 3a 20 4d 6f 76 65 20 63 75 72 73 6f 72 |,? : Move cursor| 00000850 20 20 20 20 20 20 20 20 0d 20 20 20 20 20 20 20 | . | 00000860 20 53 20 3a 20 53 74 6f 72 65 20 73 63 72 65 65 | S : Store scree| 00000870 6e 20 69 6e 20 6d 65 6d 6f 72 79 0d 20 20 20 20 |n in memory. | 00000880 20 20 30 2d 33 20 3a 20 43 68 6f 6f 73 65 20 63 | 0-3 : Choose c| 00000890 6f 6c 6f 75 72 20 20 20 20 20 20 0d 20 20 20 20 |olour . | 000008a0 20 20 20 20 55 20 3a 20 53 77 61 70 20 74 6f 20 | U : Swap to | 000008b0 73 74 6f 72 65 64 20 73 63 72 65 65 6e 0d 53 48 |stored screen.SH| 000008c0 49 46 54 2b 31 2d 36 20 3a 20 43 68 6f 6f 73 65 |IFT+1-6 : Choose| 000008d0 20 73 70 65 65 64 20 20 20 20 20 20 20 0d 20 20 | speed . | 000008e0 20 20 20 20 20 20 54 20 3a 20 54 65 78 74 0d 20 | T : Text. | 000008f0 20 20 20 20 20 20 20 42 20 3a 20 52 75 62 62 65 | B : Rubbe| 00000900 72 62 61 6e 64 20 20 20 20 20 20 20 0d 20 20 20 |rband . | 00000910 20 20 20 51 2b 57 20 3a 20 43 6c 65 61 72 20 73 | Q+W : Clear s| 00000920 63 72 65 65 6e 0d 20 20 20 20 20 20 20 20 43 20 |creen. C | 00000930 3a 20 43 69 72 63 6c 65 20 20 20 20 20 20 20 20 |: Circle | 00000940 20 20 20 20 20 0d 20 20 20 20 20 20 20 20 4b 20 | . K | 00000950 3a 20 53 61 76 65 20 73 63 72 65 65 6e 0d 20 20 |: Save screen. | 00000960 20 20 20 20 20 20 45 20 3a 20 45 6c 6c 69 70 73 | E : Ellips| 00000970 65 20 20 20 20 20 20 20 20 20 20 20 20 0d 20 20 |e . | 00000980 20 20 20 20 20 20 4c 20 3a 20 4c 6f 61 64 20 73 | L : Load s| 00000990 63 72 65 65 6e 0d 20 20 20 20 20 20 20 20 52 20 |creen. R | 000009a0 3a 20 52 65 63 74 61 6e 67 6c 65 20 20 20 20 20 |: Rectangle | 000009b0 20 20 20 20 20 0d 20 20 20 20 20 20 20 20 4d 20 | . M | 000009c0 3a 20 4d 61 67 6e 69 66 79 20 28 63 75 72 73 6f |: Magnify (curso| 000009d0 72 73 20 73 63 72 6f 6c 6c 20 76 69 65 77 29 0d |rs scroll view).| 000009e0 20 41 20 74 68 65 6e 20 31 2d 35 20 3a 20 42 72 | A then 1-5 : Br| 000009f0 75 73 68 20 6d 6f 64 65 20 20 20 20 20 20 20 20 |ush mode | 00000a00 20 0d 20 20 20 20 20 20 20 20 46 20 3a 20 46 69 | . F : Fi| 00000a10 6c 6c 0d 20 20 20 20 20 20 20 20 50 20 3a 20 43 |ll. P : C| 00000a20 75 74 20 2b 20 70 61 73 74 65 20 28 20 75 73 65 |ut + paste ( use| 00000a30 20 73 70 61 63 65 20 62 61 72 20 74 6f 20 66 69 | space bar to fi| 00000a40 78 20 61 72 65 61 20 74 6f 20 63 75 74 2c 0d 20 |x area to cut,. | 00000a50 20 20 20 20 20 20 20 20 20 20 20 20 20 64 72 61 | dra| 00000a60 67 20 62 6f 78 20 74 6f 20 6e 65 77 20 70 6f 73 |g box to new pos| 00000a70 69 74 69 6f 6e 2c 20 70 72 65 73 73 20 52 65 74 |ition, press Ret| 00000a80 75 72 6e 2c 20 74 68 65 6e 3a 0d 20 20 20 20 53 |urn, then:. S| 00000a90 70 61 63 65 20 66 6f 72 20 61 20 6e 6f 72 6d 61 |pace for a norma| 00000aa0 6c 20 63 6f 70 79 0d 20 20 20 20 20 20 20 20 48 |l copy. H| 00000ab0 20 3a 20 68 6f 72 69 7a 6f 6e 74 61 6c 20 66 6c | : horizontal fl| 00000ac0 69 70 0d 20 20 20 20 20 20 20 20 56 20 3a 20 76 |ip. V : v| 00000ad0 65 72 74 69 63 61 6c 20 66 6c 69 70 0d 20 20 20 |ertical flip. | 00000ae0 20 20 20 20 20 52 20 3a 20 72 6f 74 61 74 65 20 | R : rotate | 00000af0 28 5a 20 61 6e 64 20 58 20 72 6f 74 61 74 65 20 |(Z and X rotate | 00000b00 61 62 6f 75 74 20 62 6f 74 74 6f 6d 0d 20 20 20 |about bottom. | 00000b10 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000b20 6c 65 66 74 20 63 6f 72 6e 65 72 2c 20 74 68 65 |left corner, the| 00000b30 6e 20 73 70 61 63 65 20 74 6f 20 66 69 78 29 0d |n space to fix).| 00000b40 20 20 20 20 53 70 61 63 65 20 3a 20 43 6f 6e 66 | Space : Conf| 00000b50 69 72 6d 2f 66 69 78 2f 64 72 61 77 20 69 6e 20 |irm/fix/draw in | 00000b60 62 72 75 73 68 20 61 6e 64 20 6d 61 67 6e 69 66 |brush and magnif| 00000b70 79 20 6d 6f 64 65 73 0d 20 20 20 52 65 74 75 72 |y modes. Retur| 00000b80 6e 20 3a 20 45 78 69 74 20 62 72 75 73 68 2f 6d |n : Exit brush/m| 00000b90 61 67 6e 69 66 79 20 6d 6f 64 65 73 0d 20 20 20 |agnify modes. | 00000ba0 20 20 20 20 57 68 65 6e 20 79 6f 75 20 68 61 76 | When you hav| 00000bb0 65 20 61 20 70 69 63 74 75 72 65 1a 20 72 65 61 |e a picture. rea| 00000bc0 64 79 2c 1a 20 72 75 6e 1a 20 74 68 65 20 61 75 |dy,. run. the au| 00000bd0 74 6f 73 74 65 72 65 6f 67 72 61 6d 20 0d 67 65 |tostereogram .ge| 00000be0 6e 65 72 61 74 6f 72 2e 10 59 6f 75 20 77 69 6c |nerator..You wil| 00000bf0 6c 20 66 69 72 73 74 20 6e 65 65 64 20 74 6f 20 |l first need to | 00000c00 65 6e 74 65 72 20 74 68 65 20 66 69 6c 65 6e 61 |enter the filena| 00000c10 6d 65 1a 20 6f 66 1a 20 74 68 65 20 0d 73 6f 75 |me. of. the .sou| 00000c20 72 63 65 20 70 69 63 74 75 72 65 2c 20 61 6e 64 |rce picture, and| 00000c30 20 69 74 73 10 6d 6f 64 65 20 28 74 68 69 73 20 | its.mode (this | 00000c40 77 69 6c 6c 20 62 65 20 35 20 69 66 20 79 6f 75 |will be 5 if you| 00000c50 20 75 73 65 64 20 0d 45 6c 6b 70 61 69 6e 74 29 | used .Elkpaint)| 00000c60 2e 20 4e 65 78 74 2c 1a 20 65 6e 74 65 72 1a 20 |. Next,. enter. | 00000c70 74 68 65 20 66 69 6c 65 6e 61 6d 65 20 79 6f 75 |the filename you| 00000c80 10 77 69 73 68 1a 20 74 6f 1a 20 73 61 76 65 1a |.wish. to. save.| 00000c90 20 74 68 65 20 0d 61 75 74 6f 73 74 65 72 65 6f | the .autostereo| 00000ca0 67 72 61 6d 20 75 6e 64 65 72 2c 20 61 6e 64 20 |gram under, and | 00000cb0 69 74 73 20 6d 6f 64 65 20 28 30 20 6f 72 20 34 |its mode (0 or 4| 00000cc0 29 2e 1a 20 54 68 65 1a 20 64 6f 74 10 0d 72 65 |).. The. dot..re| 00000cd0 73 6f 6c 75 74 69 6f 6e 20 69 6e 20 6d 6f 64 65 |solution in mode| 00000ce0 20 30 1a 20 69 73 1a 20 74 77 69 63 65 1a 20 74 | 0. is. twice. t| 00000cf0 68 61 74 1a 20 69 6e 1a 20 6d 6f 64 65 1a 20 34 |hat. in. mode. 4| 00000d00 2c 20 62 75 74 20 69 6e 20 6d 79 20 0d 6f 70 69 |, but in my .opi| 00000d10 6e 69 6f 6e 2c 20 74 68 65 10 69 6d 61 67 65 73 |nion, the.images| 00000d20 20 61 72 65 20 65 61 73 69 65 72 20 74 6f 20 73 | are easier to s| 00000d30 65 65 20 69 6e 20 6d 6f 64 65 20 34 2e 20 54 68 |ee in mode 4. Th| 00000d40 65 79 20 61 72 65 1a 20 61 6c 73 6f 20 0d 6d 75 |ey are. also .mu| 00000d50 63 68 20 71 75 69 63 6b 65 72 20 74 6f 20 70 72 |ch quicker to pr| 00000d60 6f 64 75 63 65 10 69 6e 20 6d 6f 64 65 20 34 2e |oduce.in mode 4.| 00000d70 0d 20 20 20 20 20 20 4e 65 78 74 20 79 6f 75 20 |. Next you | 00000d80 6d 75 73 74 20 65 6e 74 65 72 20 74 68 65 1a 20 |must enter the. | 00000d90 22 65 79 65 20 73 65 70 61 72 61 74 69 6f 6e 22 |"eye separation"| 00000da0 2e 20 54 68 69 73 20 77 69 6c 6c 20 62 65 20 0d |. This will be .| 00000db0 74 68 65 20 64 69 73 74 61 6e 63 65 10 62 65 74 |the distance.bet| 00000dc0 77 65 65 6e 20 74 68 65 20 72 65 70 65 61 74 69 |ween the repeati| 00000dd0 6e 67 20 70 61 74 74 65 72 6e 73 20 6f 6e 20 74 |ng patterns on t| 00000de0 68 65 1a 20 70 61 67 65 2c 1a 20 61 6e 64 1a 20 |he. page,. and. | 00000df0 0d 68 65 6e 63 65 1a 20 72 65 6c 61 74 65 73 1a |.hence. relates.| 00000e00 20 74 6f 1a 20 74 68 65 10 61 6d 6f 75 6e 74 1a | to. the.amount.| 00000e10 20 79 6f 75 1a 20 68 61 76 65 1a 20 74 6f 1a 20 | you. have. to. | 00000e20 63 72 6f 73 73 1a 20 79 6f 75 72 20 65 79 65 73 |cross. your eyes| 00000e30 20 74 6f 20 73 65 65 20 0d 74 68 65 20 69 6c 6c | to see .the ill| 00000e40 75 73 69 6f 6e 20 28 69 66 20 79 6f 75 20 75 73 |usion (if you us| 00000e50 65 20 6d 79 10 73 6d 61 6c 6c 20 73 63 72 65 65 |e my.small scree| 00000e60 6e 20 64 75 6d 70 2c 20 74 68 69 73 20 77 69 6c |n dump, this wil| 00000e70 6c 20 62 65 1a 20 69 6e 20 0d 6d 69 6c 6c 69 6d |l be. in .millim| 00000e80 65 74 72 65 73 29 2e 20 49 20 66 69 6e 64 20 69 |etres). I find i| 00000e90 74 20 65 61 73 69 65 73 74 20 74 6f 20 73 65 65 |t easiest to see| 00000ea0 10 74 68 65 20 69 6d 61 67 65 73 20 69 66 20 49 |.the images if I| 00000eb0 20 75 73 65 20 61 6e 20 0d 65 79 65 1a 20 73 65 | use an .eye. se| 00000ec0 70 61 72 61 74 69 6f 6e 1a 20 6f 66 1a 20 61 62 |paration. of. ab| 00000ed0 6f 75 74 1a 20 32 30 2c 20 74 68 6f 75 67 68 20 |out. 20, though | 00000ee0 74 68 69 73 20 69 73 20 6d 75 63 68 10 6c 65 73 |this is much.les| 00000ef0 73 20 74 68 61 6e 20 69 6e 20 0d 6d 6f 73 74 20 |s than in .most | 00000f00 63 6f 6d 6d 65 72 63 69 61 6c 20 61 75 74 6f 73 |commercial autos| 00000f10 74 65 72 65 6f 67 72 61 6d 73 2e 0d 20 20 20 20 |tereograms.. | 00000f20 20 20 4e 65 78 74 2c 20 79 6f 75 20 77 69 6c 6c | Next, you will| 00000f30 20 62 65 20 61 73 6b 65 64 1a 20 74 6f 1a 20 65 | be asked. to. e| 00000f40 6e 74 65 72 1a 20 61 6e 1a 20 22 65 6c 65 76 61 |nter. an. "eleva| 00000f50 74 69 6f 6e 1a 20 6e 75 6d 62 65 72 22 20 0d 66 |tion. number" .f| 00000f60 6f 72 20 65 61 63 68 10 6c 6f 67 69 63 61 6c 20 |or each.logical | 00000f70 63 6f 6c 6f 75 72 20 75 73 65 64 20 69 6e 20 74 |colour used in t| 00000f80 68 65 20 73 6f 75 72 63 65 20 70 69 63 74 75 72 |he source pictur| 00000f90 65 2e 20 54 68 69 73 20 69 73 20 61 20 0d 6d 65 |e. This is a .me| 00000fa0 61 73 75 72 65 20 6f 66 20 68 6f 77 20 66 61 72 |asure of how far| 00000fb0 20 69 6e 10 66 72 6f 6e 74 1a 20 6f 66 1a 20 74 | in.front. of. t| 00000fc0 68 65 20 70 61 67 65 20 65 61 63 68 20 70 61 72 |he page each par| 00000fd0 74 20 6f 66 20 74 68 65 20 69 6d 61 67 65 20 0d |t of the image .| 00000fe0 77 69 6c 6c 1a 20 61 70 70 65 61 72 2e 1a 20 54 |will. appear.. 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If| 00001130 10 79 6f 75 20 75 73 65 20 6d 6f 64 65 20 30 2c |.you use mode 0,| 00001140 20 79 6f 75 20 73 68 6f 75 6c 64 1a 20 64 6f 75 | you should. dou| 00001150 62 6c 65 20 74 68 65 20 0d 76 61 6c 75 65 73 20 |ble the .values | 00001160 6d 65 6e 74 69 6f 6e 65 64 20 61 62 6f 76 65 20 |mentioned above | 00001170 28 77 68 69 63 68 20 72 65 66 65 72 10 74 6f 20 |(which refer.to | 00001180 6d 6f 64 65 20 34 29 2e 20 53 69 6d 69 6c 61 72 |mode 4). 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This| 00001290 20 6d 75 73 74 20 62 65 10 73 61 76 65 64 20 69 | must be.saved i| 000012a0 6e 20 74 68 65 20 73 61 6d 65 20 64 69 72 65 63 |n the same direc| 000012b0 74 6f 72 79 1a 20 61 73 1a 20 74 68 65 1a 20 0d |tory. as. the. .| 000012c0 61 75 74 6f 73 74 65 72 65 6f 67 72 61 6d 1a 20 |autostereogram. | 000012d0 67 65 6e 65 72 61 74 6f 72 2c 20 75 6e 64 65 72 |generator, under| 000012e0 20 74 68 65 10 66 69 6c 65 6e 61 6d 65 1a 20 22 | the.filename. "| 000012f0 53 63 72 44 75 6d 70 22 20 28 73 6f 72 72 79 20 |ScrDump" (sorry | 00001300 0d 61 62 6f 75 74 20 74 68 65 20 74 6f 74 61 6c |.about the total| 00001310 20 6c 61 63 6b 20 6f 66 20 6d 65 61 6e 69 6e 67 | lack of meaning| 00001320 66 75 6c 1a 20 6c 61 62 65 6c 73 1a 20 61 6e 64 |ful. labels. and| 00001330 10 76 61 72 69 61 62 6c 65 20 6e 61 6d 65 73 1a |.variable names.| 00001340 20 0d 69 6e 1a 20 74 68 69 73 1a 20 70 72 6f 67 | .in. this. prog| 00001350 72 61 6d 21 29 2e 1a 20 59 6f 75 1a 20 6d 61 79 |ram!).. You. may| 00001360 20 70 72 65 66 65 72 20 74 6f 20 75 73 65 20 74 | prefer to use t| 00001370 68 65 20 64 75 6d 70 20 66 72 6f 6d 10 0d 22 44 |he dump from.."D| 00001380 69 61 67 72 61 6d 22 2c 20 77 68 69 63 68 20 49 |iagram", which I| 00001390 20 68 61 76 65 20 61 6c 73 6f 20 69 6d 70 72 6f | have also impro| 000013a0 76 65 64 2e 20 54 68 69 73 1a 20 69 73 20 74 77 |ved. This. is tw| 000013b0 69 63 65 20 61 73 20 66 61 73 74 20 0d 61 73 20 |ice as fast .as | 000013c0 6d 69 6e 65 2c 20 61 6e 64 10 74 68 65 20 73 61 |mine, and.the sa| 000013d0 6d 65 20 73 68 61 70 65 2c 20 62 75 74 20 69 73 |me shape, but is| 000013e0 20 35 30 25 20 77 69 64 65 72 2c 20 66 69 6c 6c | 50% wider, fill| 000013f0 69 6e 67 1a 20 74 68 65 20 0d 66 75 6c 6c 20 77 |ing. the .full w| 00001400 69 64 74 68 20 6f 66 20 74 68 65 20 63 61 72 72 |idth of the carr| 00001410 69 61 67 65 2e 10 54 68 69 73 1a 20 6d 61 63 68 |iage..This. mach| 00001420 69 6e 65 20 63 6f 64 65 20 70 72 6f 67 72 61 6d |ine code program| 00001430 20 69 73 20 73 61 76 65 64 20 0d 61 73 20 20 22 | is saved .as "| 00001440 55 43 4f 44 45 22 2e 20 54 68 65 72 65 1a 20 69 |UCODE". 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This could .| 000014e0 74 61 6b 65 20 75 70 20 74 6f 20 34 35 10 6d 69 |take up to 45.mi| 000014f0 6e 75 74 65 73 20 69 66 20 79 6f 75 20 61 72 65 |nutes if you are| 00001500 20 75 73 69 6e 67 1a 20 6d 6f 64 65 20 30 2c 20 | using. mode 0, | 00001510 73 6f 20 62 65 20 70 61 74 69 65 6e 74 20 0d 69 |so be patient .i| 00001520 66 20 74 68 65 20 63 6f 6d 70 75 74 65 72 20 61 |f the computer a| 00001530 70 70 65 61 72 73 20 74 6f 10 62 65 20 64 6f 69 |ppears to.be doi| 00001540 6e 67 20 6e 6f 74 68 69 6e 67 20 66 6f 72 20 61 |ng nothing for a| 00001550 20 6c 6f 6e 67 20 70 65 72 69 6f 64 2e 0d 20 20 | long period.. | 00001560 20 20 20 20 20 41 6c 6c 20 74 68 65 73 65 20 70 | All these p| 00001570 61 72 61 6d 65 74 65 72 73 20 77 69 6c 6c 20 73 |arameters will s| 00001580 6f 75 6e 64 1a 20 72 61 74 68 65 72 1a 20 63 6f |ound. rather. co| 00001590 6d 70 6c 69 63 61 74 65 64 1a 20 69 66 1a 20 0d |mplicated. if. .| 000015a0 79 6f 75 1a 20 68 61 76 65 10 6e 65 76 65 72 1a |you. have.never.| 000015b0 20 61 63 74 75 61 6c 6c 79 1a 20 73 65 65 6e 20 | actually. seen | 000015c0 61 6e 20 61 75 74 6f 73 74 65 72 65 6f 67 72 61 |an autostereogra| 000015d0 6d 20 62 65 66 6f 72 65 2c 20 62 75 74 20 0d 64 |m before, but .d| 000015e0 6f 6e 27 74 20 77 6f 72 72 79 20 2d 20 6a 75 73 |on't worry - jus| 000015f0 74 20 75 73 65 10 6d 79 20 73 75 67 67 65 73 74 |t use.my suggest| 00001600 65 64 20 76 61 6c 75 65 73 1a 20 74 6f 1a 20 67 |ed values. to. g| 00001610 65 74 1a 20 79 6f 75 1a 20 73 74 61 72 74 65 64 |et. you. started| 00001620 2e 1a 20 0d 54 68 65 6e 20 79 6f 75 20 63 61 6e |.. .Then you can| 00001630 20 74 72 79 20 76 61 72 79 69 6e 67 20 74 68 65 | try varying the| 00001640 6d 10 6c 61 74 65 72 2c 20 6f 6e 65 20 61 74 20 |m.later, one at | 00001650 61 20 74 69 6d 65 2c 20 74 6f 20 73 65 65 20 74 |a time, to see t| 00001660 68 65 20 0d 65 66 66 65 63 74 73 2e 0d 20 20 20 |he .effects.. | 00001670 20 20 20 20 59 6f 75 20 6d 61 79 20 62 65 20 61 | You may be a| 00001680 62 6c 65 20 74 6f 1a 20 73 65 65 1a 20 74 68 65 |ble to. see. the| 00001690 20 65 66 66 65 63 74 20 6f 6e 20 79 6f 75 72 20 | effect on your | 000016a0 54 56 2f 6d 6f 6e 69 74 6f 72 20 0d 73 63 72 65 |TV/monitor .scre| 000016b0 65 6e 20 69 66 20 69 74 10 69 73 20 6e 6f 74 20 |en if it.is not | 000016c0 74 6f 6f 20 66 6c 69 63 6b 65 72 79 2c 20 74 68 |too flickery, th| 000016d0 6f 75 67 68 20 69 74 20 69 73 1a 20 67 65 6e 65 |ough it is. gene| 000016e0 72 61 6c 6c 79 20 0d 65 61 73 69 65 72 20 6f 6e |rally .easier on| 000016f0 20 70 61 70 65 72 2e 20 4d 79 20 70 72 65 66 65 | paper. My prefe| 00001700 72 72 65 64 10 6d 65 74 68 6f 64 20 69 73 20 74 |rred.method is t| 00001710 6f 20 73 74 61 72 65 20 62 6c 61 6e 6b 6c 79 20 |o stare blankly | 00001720 61 74 20 0d 74 68 65 20 70 61 67 65 2c 1a 20 61 |at .the page,. a| 00001730 6e 64 1a 20 73 6c 6f 77 6c 79 20 72 65 66 6f 63 |nd. slowly refoc| 00001740 75 73 20 6d 79 20 65 79 65 73 20 75 6e 74 69 6c |us my eyes until| 00001750 10 74 77 6f 20 63 6f 6c 75 6d 6e 73 20 6f 66 20 |.two columns of | 00001760 74 68 65 20 0d 72 65 70 65 61 74 69 6e 67 20 70 |the .repeating p| 00001770 61 74 74 65 72 6e 20 61 70 70 65 61 72 20 74 6f |attern appear to| 00001780 20 6d 65 72 67 65 20 69 6e 74 6f 1a 20 6f 6e 65 | merge into. one| 00001790 2e 1a 20 54 68 65 6e 2c 1a 20 69 66 10 79 6f 75 |.. Then,. if.you| 000017a0 1a 20 63 61 6e 1a 20 0d 68 6f 6c 64 1a 20 79 6f |. can. .hold. yo| 000017b0 75 72 1a 20 66 6f 63 75 73 1a 20 6c 6f 6e 67 1a |ur. focus. long.| 000017c0 20 65 6e 6f 75 67 68 20 6f 6e 20 74 68 65 20 6d | enough on the m| 000017d0 65 72 67 65 64 20 70 61 74 74 65 72 6e 2c 20 74 |erged pattern, t| 000017e0 68 65 20 69 6d 61 67 65 10 0d 73 68 6f 75 6c 64 |he image..should| 000017f0 20 6c 69 66 74 20 6f 75 74 2e 0d 20 20 20 20 20 | lift out.. | 00001800 20 20 4f 74 68 65 72 20 70 65 6f 70 6c 65 20 70 | Other people p| 00001810 72 65 66 65 72 20 74 68 65 20 66 6f 6c 6c 6f 77 |refer the follow| 00001820 69 6e 67 1a 20 6d 65 74 68 6f 64 3a 1a 20 48 6f |ing. method:. Ho| 00001830 6c 64 1a 20 74 68 65 20 0d 70 61 70 65 72 20 61 |ld. the .paper a| 00001840 67 61 69 6e 73 74 10 79 6f 75 72 20 66 61 63 65 |gainst.your face| 00001850 2c 20 61 6e 64 20 73 74 61 72 65 20 74 68 72 6f |, and stare thro| 00001860 75 67 68 20 69 74 20 62 6c 61 6e 6b 6c 79 2e 20 |ugh it blankly. | 00001870 53 6c 6f 77 6c 79 1a 20 0d 6d 6f 76 65 1a 20 74 |Slowly. .move. t| 00001880 68 65 20 70 61 70 65 72 20 61 77 61 79 20 66 72 |he paper away fr| 00001890 6f 6d 10 79 6f 75 72 20 66 61 63 65 20 77 69 74 |om.your face wit| 000018a0 68 6f 75 74 20 61 6c 74 65 72 69 6e 67 20 79 6f |hout altering yo| 000018b0 75 72 20 0d 66 6f 63 75 73 2c 20 75 6e 74 69 6c |ur .focus, until| 000018c0 20 74 68 65 20 69 6d 61 67 65 20 61 70 70 65 61 | the image appea| 000018d0 72 73 2c 1a 20 74 68 65 6e 20 77 61 69 74 10 75 |rs,. then wait.u| 000018e0 6e 74 69 6c 20 69 74 20 62 65 63 6f 6d 65 73 20 |ntil it becomes | 000018f0 0d 63 6c 65 61 72 2e 20 59 6f 75 20 77 69 6c 6c |.clear. You will| 00001900 20 68 61 76 65 20 74 6f 20 63 6f 6e 63 65 6e 74 | have to concent| 00001910 72 61 74 65 20 76 65 72 79 20 68 61 72 64 1a 20 |rate very hard. | 00001920 74 6f 20 70 72 65 76 65 6e 74 10 0d 79 6f 75 72 |to prevent..your| 00001930 73 65 6c 66 20 66 72 6f 6d 20 72 65 66 6f 63 75 |self from refocu| 00001940 73 69 6e 67 20 6f 6e 20 74 68 65 20 69 6d 61 67 |sing on the imag| 00001950 65 20 61 73 20 69 74 20 61 70 70 65 61 72 73 2e |e as it appears.| 00001960 0d 20 20 20 20 20 20 20 41 6e 6f 74 68 65 72 20 |. Another | 00001970 6d 65 74 68 6f 64 20 69 73 20 74 6f 20 70 6c 61 |method is to pla| 00001980 63 65 20 61 20 72 65 66 6c 65 63 74 69 76 65 20 |ce a reflective | 00001990 73 75 72 66 61 63 65 20 6f 76 65 72 20 20 0d 74 |surface over .t| 000019a0 68 65 20 70 61 67 65 2c 20 61 6e 64 10 66 6f 63 |he page, and.foc| 000019b0 75 73 20 6f 6e 20 79 6f 75 72 20 72 65 66 6c 65 |us on your refle| 000019c0 63 74 69 6f 6e 20 28 61 1a 20 54 56 2f 6d 6f 6e |ction (a. 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