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% Version 3.3.2 prologue for troff files.
%

/#copies 1 store
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/R  /Times-Roman def
/I  /Times-Italic def
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/BI /Times-BoldItalic def
/H  /Helvetica def
/HI /Helvetica-Oblique def
/HB /Helvetica-Bold def
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/CI /Courier-Oblique def
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/NI /NewCenturySchlbk-Italic def
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/NX /NewCenturySchlbk-BoldItalic def
/ZD /ZapfDingbats def
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	addmetrics
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/w {neg moveto show} bind def
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/changefont {
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%
% A few arrays used to adjust reference points and character widths in some
% of the printer resident fonts. If square roots are too high try changing
% the lines describing /radical and /radicalex to,
%
%	/radical	[0 -75 550 0]
%	/radicalex	[-50 -75 500 0]
%
% Move braceleftbt a bit - default PostScript character is off a bit.
%

/Sdefs [
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	/bracketleftbt		[201 500]
	/bracketrighttp		[-81 380]
	/bracketrightbt		[-83 380]
	/braceleftbt		[203 490]
	/bracketrightex		[220 -125 500 0]
	/radical		[0 0 550 0]
	/radicalex		[-50 0 500 0]
	/parenleftex		[-20 -170 0 0]
	/integral		[100 -50 500 0]
	/infinity		[10 -75 730 0]
] def

/S1defs [
	/underscore		[0 80 500 0]
	/endash			[7 90 650 0]
] def
%
% Tries to round clipping path dimensions, as stored in array pagebbox, so they
% match one of the known sizes in the papersizes array. Lower left coordinates
% are always set to 0.
%

/roundpagebbox {
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%%EndProlog
%%BeginSetup
mark
%
% Encoding vector and redefinition of findfont for the ISO Latin1 standard.
% The 18 characters missing from ROM based fonts on older printers are noted
% below.
%

/ISOLatin1Encoding [
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	/parenleft
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	/plus
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	/zero
	/one
	/two
	/three
	/four
	/five
	/six
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	/eight
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	/colon
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	/equal
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	/A
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	/C
	/D
	/E
	/F
	/G
	/H
	/I
	/J
	/K
	/L
	/M
	/N
	/O
	/P
	/Q
	/R
	/S
	/T
	/U
	/V
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	/X
	/Y
	/Z
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	/bracketright
	/asciicircum
	/underscore
	/quoteleft
	/a
	/b
	/c
	/d
	/e
	/f
	/g
	/h
	/i
	/j
	/k
	/l
	/m
	/n
	/o
	/p
	/q
	/r
	/s
	/t
	/u
	/v
	/w
	/x
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	/braceleft
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	/braceright
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	/.notdef
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	/ogonek
	/caron
	/space
	/exclamdown
	/cent
	/sterling
	/currency
	/yen
	/brokenbar		% missing
	/section
	/dieresis
	/copyright
	/ordfeminine
	/guillemotleft
	/logicalnot
	/hyphen
	/registered
	/macron
	/degree			% missing
	/plusminus		% missing
	/twosuperior		% missing
	/threesuperior		% missing
	/acute
	/mu			% missing
	/paragraph
	/periodcentered
	/cedilla
	/onesuperior		% missing
	/ordmasculine
	/guillemotright
	/onequarter		% missing
	/onehalf		% missing
	/threequarters		% missing
	/questiondown
	/Agrave
	/Aacute
	/Acircumflex
	/Atilde
	/Adieresis
	/Aring
	/AE
	/Ccedilla
	/Egrave
	/Eacute
	/Ecircumflex
	/Edieresis
	/Igrave
	/Iacute
	/Icircumflex
	/Idieresis
	/Eth			% missing
	/Ntilde
	/Ograve
	/Oacute
	/Ocircumflex
	/Otilde
	/Odieresis
	/multiply		% missing
	/Oslash
	/Ugrave
	/Uacute
	/Ucircumflex
	/Udieresis
	/Yacute			% missing
	/Thorn			% missing
	/germandbls
	/agrave
	/aacute
	/acircumflex
	/atilde
	/adieresis
	/aring
	/ae
	/ccedilla
	/egrave
	/eacute
	/ecircumflex
	/edieresis
	/igrave
	/iacute
	/icircumflex
	/idieresis
	/eth			% missing
	/ntilde
	/ograve
	/oacute
	/ocircumflex
	/otilde
	/odieresis
	/divide			% missing
	/oslash
	/ugrave
	/uacute
	/ucircumflex
	/udieresis
	/yacute			% missing
	/thorn			% missing
	/ydieresis
] def

/NewFontDirectory FontDirectory maxlength dict def

%
% Apparently no guarantee findfont is defined in systemdict so the obvious
%
%	systemdict /findfont get exec
%
% can generate an error. So far the only exception is a VT600 (version 48.0).
%

userdict /@RealFindfont known not {
	userdict begin
		/@RealFindfont systemdict begin /findfont load end def
	end
} if

/findfont {
	dup NewFontDirectory exch known not {
		dup
		%dup systemdict /findfont get exec	% not always in systemdict
		dup userdict /@RealFindfont get exec
		dup /Encoding get StandardEncoding eq {
			dup length dict begin
				{1 index /FID ne {def}{pop pop} ifelse} forall
				/Encoding ISOLatin1Encoding def
				currentdict
			end
			/DummyFontName exch definefont
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		NewFontDirectory 3 1 roll put
	} if
	NewFontDirectory exch get
} bind def

setup
%%EndSetup
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12 /Times-Bold f
(PGM) 2186 1230 w
(Format) 2496 1230 w
(Specification) 2912 1230 w
10 /Times-Bold f
(pgm) 720 1920 w
10 /Times-Roman f
(Updated: 03 October 2003) 720 2076 w
(Table Of Contents) 720 2196 w
10 /Times-Bold f
(NAME) 720 2436 w
10 /Times-Roman f
(pgm \255 Netpbm grayscale image format) 720 2592 w
10 /Times-Bold f
(DESCRIPTION) 720 2832 w
10 /Times-Roman f
(This program is part of Netpbm.) 720 3024 w
(The) 720 3180 w
(PGM) 911 3180 w
(format) 1164 3180 w
(is) 1466 3180 w
(a) 1569 3180 w
(lowest) 1649 3180 w
(common) 1946 3180 w
(denominator) 2332 3180 w
(grayscale) 2873 3180 w
(file) 3285 3180 w
(format.) 3454 3180 w
(It) 3806 3180 w
(is) 3903 3180 w
(designed) 4006 3180 w
(to) 4397 3180 w
(be) 4511 3180 w
(extremely) 4641 3180 w
(easy) 720 3300 w
(to) 940 3300 w
(learn) 1061 3300 w
(and) 1303 3300 w
(write) 1490 3300 w
(programs) 1738 3300 w
(for.) 2158 3300 w
(\(It's) 2367 3300 w
(so) 2576 3300 w
(simple) 2708 3300 w
(that) 3018 3300 w
(most) 3211 3300 w
(people) 3449 3300 w
(will) 3757 3300 w
(simply) 3955 3300 w
(reverse) 4270 3300 w
(engineer) 4599 3300 w
(it) 4984 3300 w
(because it's easier than reading this specification\).) 720 3420 w
(A) 720 3576 w
(PGM) 822 3576 w
(image) 1069 3576 w
(represents) 1343 3576 w
(a) 1777 3576 w
(grayscale) 1851 3576 w
(graphic) 2257 3576 w
(image.) 2586 3576 w
(There) 2910 3576 w
(are) 3172 3576 w
(many) 3323 3576 w
(psueudo\255PGM) 3575 3576 w
(formats) 4188 3576 w
(in) 4524 3576 w
(use) 4633 3576 w
(where) 4797 3576 w
(everything) 720 3696 w
(is) 1181 3696 w
(as) 1282 3696 w
(specified) 1399 3696 w
(herein) 1793 3696 w
(except) 2076 3696 w
(for) 2370 3696 w
(the) 2520 3696 w
(meaning) 2676 3696 w
(of) 3054 3696 w
(individual) 3171 3696 w
(pixel) 3611 3696 w
(values.) 3845 3696 w
(For) 4183 3696 w
(most) 4355 3696 w
(purposes,) 4583 3696 w
(a) 4996 3696 w
(PGM) 720 3816 w
(image) 973 3816 w
(can) 1254 3816 w
(just) 1429 3816 w
(be) 1611 3816 w
(thought) 1742 3816 w
(of) 2085 3816 w
(an) 2205 3816 w
(array) 2336 3816 w
(of) 2577 3816 w
(arbitrary) 2697 3816 w
(integers,) 3077 3816 w
(and) 3455 3816 w
(all) 3636 3816 w
(the) 3773 3816 w
(programs) 3932 3816 w
(in) 4346 3816 w
(the) 4461 3816 w
(world) 4620 3816 w
(that) 4890 3816 w
(think they're processing a grayscale image can easily be tricked into processing something else.) 720 3936 w
(The name "PGM" is an acronym derived from "Portable Gray Map.") 720 4092 w
(One) 720 4248 w
(official) 913 4248 w
(variant) 1228 4248 w
(of) 1532 4248 w
(PGM) 1642 4248 w
(is) 1886 4248 w
(the) 1980 4248 w
(transparency) 2129 4248 w
(mask.) 2665 4248 w
(A) 2954 4248 w
(transparency) 3054 4248 w
(mask) 3591 4248 w
(in) 3830 4248 w
(Netpbm) 3936 4248 w
(is) 4286 4248 w
(represented) 4381 4248 w
(by) 4868 4248 w
(a) 4996 4248 w
(PGM image, except that in place of pixel intensities, there are opaqueness values.) 720 4368 w
(See below.) 4028 4368 w
(The) 720 4524 w
(format) 909 4524 w
(definition) 1209 4524 w
(is) 1632 4524 w
(as) 1733 4524 w
(follows.) 1850 4524 w
(You) 2234 4524 w
(can) 2440 4524 w
(use) 2612 4524 w
(the) 2779 4524 w
(libnetpbm) 2935 4524 w
(C) 3375 4524 w
(subroutine) 3476 4524 w
(library) 3932 4524 w
(to) 4232 4524 w
(conveniently) 4345 4524 w
(and) 4896 4524 w
(accurately read and interpret the format.) 720 4644 w
(A) 720 4800 w
(PGM) 822 4800 w
(file) 1069 4800 w
(consists) 1232 4800 w
(of) 1579 4800 w
(a) 1692 4800 w
(sequence) 1766 4800 w
(of) 2161 4800 w
(one) 2274 4800 w
(or) 2448 4800 w
(more) 2561 4800 w
(PGM) 2796 4800 w
(images.) 3043 4800 w
(There) 3381 4800 w
(are) 3643 4800 w
(no) 3795 4800 w
(data,) 3926 4800 w
(delimiters,) 4148 4800 w
(or) 4604 4800 w
(padding) 4718 4800 w
(before, after, or between images.) 720 4920 w
(Each PGM image consists of the following:) 720 5076 w
(1) 720 5232 w
(A) 970 5232 w
("magic) 1071 5232 w
(number") 1385 5232 w
(for) 1761 5232 w
(identifying) 1907 5232 w
(the) 2376 5232 w
(file) 2528 5232 w
(type.) 2691 5232 w
(A) 2943 5232 w
(pgm) 3045 5232 w
(image's) 3253 5232 w
(magic) 3599 5232 w
(number) 3873 5232 w
(is) 4208 5232 w
(the) 4305 5232 w
(two) 4457 5232 w
(characters) 4637 5232 w
("P5".) 970 5352 w
(2) 720 5508 w
(Whitespace \(blanks, TABs, CRs, LFs\).) 970 5508 w
(3) 720 5664 w
(A width, formatted as ASCII characters in decimal.) 970 5664 w
(4) 720 5820 w
(Whitespace.) 970 5820 w
(5) 720 5976 w
(A height, again in ASCII decimal.) 970 5976 w
(6) 720 6132 w
(Whitespace.) 970 6132 w
(7) 720 6288 w
(The) 970 6288 w
(maximum) 1161 6288 w
(gray) 1603 6288 w
(value) 1817 6288 w
(\(Maxval\),) 2070 6288 w
(again) 2503 6288 w
(in) 2756 6288 w
(ASCII) 2871 6288 w
(decimal.) 3169 6288 w
(Must) 3572 6288 w
(be) 3815 6288 w
(less) 3946 6288 w
(than) 4133 6288 w
(65536,) 4342 6288 w
(and) 4654 6288 w
(more) 4835 6288 w
(than zero.) 970 6408 w
(8) 720 6564 w
(Newline or other single whitespace character.) 970 6564 w
(9) 720 6720 w
(A) 970 6720 w
(raster) 1077 6720 w
(of) 1333 6720 w
(Height) 1451 6720 w
(rows,) 1758 6720 w
(in) 2012 6720 w
(order) 2125 6720 w
(from) 2371 6720 w
(top) 2601 6720 w
(to) 2765 6720 w
(bottom.) 2879 6720 w
(Each) 3249 6720 w
(row) 3484 6720 w
(consists) 3675 6720 w
(of) 4028 6720 w
(Width) 4147 6720 w
(gray) 4433 6720 w
(values,) 4646 6720 w
(in) 4962 6720 w
(order) 970 6840 w
(from) 1207 6840 w
(left) 1428 6840 w
(to) 1588 6840 w
(right.) 1693 6840 w
(Each) 1959 6840 w
(gray) 2185 6840 w
(value) 2389 6840 w
(is) 2632 6840 w
(a) 2726 6840 w
(number) 2797 6840 w
(from) 3129 6840 w
(0) 3350 6840 w
(through) 3427 6840 w
(Maxval,) 3765 6840 w
(with) 4122 6840 w
(0) 4327 6840 w
(being) 4404 6840 w
(black) 4653 6840 w
(and) 4896 6840 w
(Maxval) 970 6960 w
(being) 1313 6960 w
(white.) 1573 6960 w
(Each) 1883 6960 w
(gray) 2120 6960 w
(value) 2335 6960 w
(is) 2589 6960 w
(represented) 2694 6960 w
(in) 3191 6960 w
(pure) 3307 6960 w
(binary) 3522 6960 w
(by) 3815 6960 w
(either) 3953 6960 w
(1) 4218 6960 w
(or) 4306 6960 w
(2) 4427 6960 w
(bytes.) 4515 6960 w
(If) 4814 6960 w
(the) 4918 6960 w
(Maxval is less than 256, it is 1 byte.) 970 7080 w
(Otherwise, it is 2 bytes.) 2459 7080 w
(The most significant byte is first.) 3453 7080 w
(A row of an image is horizontal.) 720 7236 w
(A column is vertical.) 2065 7236 w
(The pixels in the image are square and contiguous.) 2953 7236 w
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(\255 2 \255) 2797 480 w
(10) 720 840 w
(Each) 970 840 w
(gray) 1195 840 w
(value) 1398 840 w
(is) 1640 840 w
(a) 1734 840 w
(number) 1805 840 w
(proportional) 2137 840 w
(to) 2658 840 w
(the) 2763 840 w
(intensity) 2912 840 w
(of) 3284 840 w
(the) 3394 840 w
(pixel,) 3543 840 w
(adjusted) 3795 840 w
(by) 4155 840 w
(the) 4282 840 w
(ITU\255R) 4431 840 w
(Recom\255) 4724 840 w
(mendation) 970 960 w
(BT.709) 1429 960 w
(gamma) 1769 960 w
(transfer) 2100 960 w
(function.) 2441 960 w
(\(That) 2860 960 w
(transfer) 3112 960 w
(function) 3452 960 w
(specifies) 3821 960 w
(a) 4206 960 w
(gamma) 4286 960 w
(number) 4616 960 w
(of) 4957 960 w
(2.2) 970 1080 w
(and) 1133 1080 w
(has) 1315 1080 w
(a) 1486 1080 w
(linear) 1568 1080 w
(section) 1833 1080 w
(for) 2154 1080 w
(small) 2308 1080 w
(intensities\).) 2563 1080 w
(A) 3090 1080 w
(value) 3200 1080 w
(of) 3454 1080 w
(zero) 3575 1080 w
(is) 3784 1080 w
(therefore) 3889 1080 w
(black.) 4286 1080 w
(A) 4591 1080 w
(value) 4702 1080 w
(of) 4957 1080 w
(Maxval) 970 1200 w
(represents) 1310 1200 w
(CIE) 1749 1200 w
(D65) 1945 1200 w
(white) 2152 1200 w
(and) 2409 1200 w
(the) 2588 1200 w
(most) 2745 1200 w
(intense) 2975 1200 w
(value) 3293 1200 w
(in) 3543 1200 w
(the) 3655 1200 w
(image) 3811 1200 w
(and) 4089 1200 w
(any) 4267 1200 w
(other) 4445 1200 w
(image) 4684 1200 w
(to) 4962 1200 w
(which the image might be compared.) 970 1320 w
(11) 720 1476 w
(Note) 970 1476 w
(that) 1193 1476 w
(a) 1372 1476 w
(common) 1445 1476 w
(variation) 1824 1476 w
(on) 2208 1476 w
(the) 2337 1476 w
(PGM) 2488 1476 w
(format) 2734 1476 w
(is) 3029 1476 w
(to) 3125 1476 w
(have) 3232 1476 w
(the) 3449 1476 w
(gray) 3600 1476 w
(value) 3806 1476 w
(be) 4051 1476 w
("linear,") 4174 1476 w
(i.e.) 4537 1476 w
(as) 4689 1476 w
(speci\255) 4802 1476 w
(fied) 970 1596 w
(above) 1160 1596 w
(except) 1433 1596 w
(without) 1728 1596 w
(the) 2069 1596 w
(gamma) 2225 1596 w
(adjustment.) 2553 1596 w
10 /Times-Bold f
(pnmgamma) 3076 1596 w
10 /Times-Roman f
(takes) 3621 1596 w
(such) 3860 1596 w
(a) 4077 1596 w
(PGM) 4155 1596 w
(variant) 4406 1596 w
(as) 4717 1596 w
(input) 4834 1596 w
(and produces a true PGM as output.) 970 1716 w
(12) 720 1872 w
(In) 970 1872 w
(the) 1088 1872 w
(transparency) 1245 1872 w
(mask) 1789 1872 w
(variation) 2035 1872 w
(on) 2425 1872 w
(PGM,) 2560 1872 w
(the) 2837 1872 w
(value) 2994 1872 w
(represents) 3246 1872 w
(opaqueness.) 3686 1872 w
(It) 4232 1872 w
(is) 4329 1872 w
(proportional) 4432 1872 w
(to) 4962 1872 w
(the) 970 1992 w
(fraction) 1118 1992 w
(of) 1454 1992 w
(intensity) 1563 1992 w
(of) 1934 1992 w
(a) 2043 1992 w
(pixel) 2113 1992 w
(that) 2339 1992 w
(would) 2515 1992 w
(show) 2791 1992 w
(in) 3028 1992 w
(place) 3132 1992 w
(of) 3368 1992 w
(an underlying pixel.) 3477 1992 w
(So what normally) 4329 1992 w
(means) 970 2112 w
(white) 1272 2112 w
(represents) 1541 2112 w
(total) 1992 2112 w
(opaqueness) 2217 2112 w
(and) 2725 2112 w
(what) 2917 2112 w
(normally) 3159 2112 w
(means) 3568 2112 w
(black) 3871 2112 w
(represents) 4135 2112 w
(total) 4587 2112 w
(trans\255) 4813 2112 w
(parency.) 970 2232 w
(In) 1362 2232 w
(between,) 1472 2232 w
(you) 1856 2232 w
(would) 2033 2232 w
(compute) 2310 2232 w
(the) 2681 2232 w
(intensity) 2830 2232 w
(of) 3202 2232 w
(a) 3312 2232 w
(composite) 3383 2232 w
(pixel) 3821 2232 w
(of) 4047 2232 w
(an) 4156 2232 w
("under") 4276 2232 w
(and) 4611 2232 w
("over") 4781 2232 w
(pixel) 970 2352 w
(as) 1214 2352 w
(under) 1341 2352 w
(*) 1612 2352 w
(\(1\255\(alpha/alpha) 1706 2352 w
10 /S f
(_) 2315 2352 w
10 /Times-Roman f
(maxval\)\)) 2365 2352 w
(+) 2769 2352 w
(over) 2869 2352 w
(*) 3090 2352 w
(\(alpha/alpha) 3185 2352 w
10 /S f
(_) 3678 2352 w
10 /Times-Roman f
(maxval\).) 3728 2352 w
(Note) 4150 2352 w
(that) 4389 2352 w
(there) 4584 2352 w
(is) 4828 2352 w
(no) 4940 2352 w
(gamma transfer function in the transparency mask.) 970 2472 w
(13) 720 2628 w
(Characters from a "#" to the next end\255of\255line, before the maxval line, are comments and are ignored.) 970 2628 w
(Note) 720 2940 w
(that) 946 2940 w
(you) 1128 2940 w
(can) 1310 2940 w
(use) 1480 2940 w
10 /Times-Bold f
(pamdepth) 1645 2940 w
10 /Times-Roman f
(to) 2111 2940 w
(convert) 2221 2940 w
(between) 2552 2940 w
(a) 2916 2940 w
(the) 2992 2940 w
(format) 3147 2940 w
(with) 3446 2940 w
(1) 3657 2940 w
(byte) 3740 2940 w
(per) 3945 2940 w
(gray) 4105 2940 w
(value) 4315 2940 w
(and) 4564 2940 w
(the) 4741 2940 w
(one) 4896 2940 w
(with 2 bytes per gray value.) 720 3060 w
(There) 720 3216 w
(is) 985 3216 w
(actually) 1085 3216 w
(another) 1434 3216 w
(version) 1766 3216 w
(of) 2093 3216 w
(the) 2210 3216 w
(PGM) 2366 3216 w
(format) 2617 3216 w
(that) 2917 3216 w
(is) 3101 3216 w
(fairly) 3202 3216 w
(rare:) 3452 3216 w
("plain") 3668 3216 w
(PGM) 3984 3216 w
(format.) 4235 3216 w
(The) 4585 3216 w
(format) 4774 3216 w
(above,) 720 3336 w
(which) 1011 3336 w
(generally) 1283 3336 w
(considered) 1682 3336 w
(the) 2141 3336 w
(normal) 2290 3336 w
(one,) 2600 3336 w
(is) 2796 3336 w
(known) 2890 3336 w
(as) 3189 3336 w
(the) 3299 3336 w
("raw") 3448 3336 w
(PGM) 3706 3336 w
(format.) 3950 3336 w
(See) 4293 3336 w
10 /Times-Bold f
(pbm) 4464 3336 w
10 /Times-Roman f
(for) 4686 3336 w
(some) 4829 3336 w
(commentary on how plain and raw formats relate to one another and how to use them.) 720 3456 w
(The difference in the plain format is:) 720 3612 w
(\255) 970 3768 w
(There is exactly one image in a file.) 1220 3768 w
(\255) 970 3924 w
(The magic number is P2 instead of P5.) 1220 3924 w
(\255) 970 4080 w
(Each pixel in the raster is represented as an ASCII decimal number \(of arbitrary size\).) 1220 4080 w
(\255) 970 4236 w
(Each pixel in the raster has white space before and after it.) 1220 4236 w
(There must be) 3602 4236 w
(at) 4199 4236 w
(least) 4297 4236 w
(one) 4506 4236 w
(character) 4676 4236 w
(of white space between any two pixels, but there is no maximum.) 1220 4356 w
(\255) 970 4512 w
(No line should be longer than 70 characters.) 1220 4512 w
(Here is an example of a small image in the plain PGM format.) 720 4668 w
(P2) 720 4848 w
(# feep.pgm) 720 4968 w
(24 7) 720 5088 w
(15) 720 5208 w
(0) 720 5328 w
(0) 820 5328 w
(0) 920 5328 w
(0) 1020 5328 w
(0) 1120 5328 w
(0) 1220 5328 w
(0) 1320 5328 w
(0) 1420 5328 w
(0) 1520 5328 w
(0) 1620 5328 w
(0) 1720 5328 w
(0) 1820 5328 w
(0) 1920 5328 w
(0) 2020 5328 w
(0) 2120 5328 w
(0) 2220 5328 w
(0) 2320 5328 w
(0) 2420 5328 w
(0) 2520 5328 w
(0) 2620 5328 w
(0) 2720 5328 w
(0) 2820 5328 w
(0) 2920 5328 w
(0) 3020 5328 w
(0) 720 5448 w
(3) 820 5448 w
(3) 920 5448 w
(3) 1020 5448 w
(3) 1120 5448 w
(0) 1220 5448 w
(0) 1320 5448 w
(7) 1420 5448 w
(7) 1520 5448 w
(7) 1620 5448 w
(7) 1720 5448 w
(0) 1820 5448 w
(0 11 11 11 11) 1920 5448 w
(0) 2520 5448 w
(0 15 15 15 15) 2620 5448 w
(0) 3220 5448 w
(0) 720 5568 w
(3) 820 5568 w
(0) 920 5568 w
(0) 1020 5568 w
(0) 1120 5568 w
(0) 1220 5568 w
(0) 1320 5568 w
(7) 1420 5568 w
(0) 1520 5568 w
(0) 1620 5568 w
(0) 1720 5568 w
(0) 1820 5568 w
(0 11) 1920 5568 w
(0) 2145 5568 w
(0) 2245 5568 w
(0) 2345 5568 w
(0) 2445 5568 w
(0 15) 2545 5568 w
(0) 2770 5568 w
(0 15) 2870 5568 w
(0) 3095 5568 w
(0) 720 5688 w
(3) 820 5688 w
(3) 920 5688 w
(3) 1020 5688 w
(0) 1120 5688 w
(0) 1220 5688 w
(0) 1320 5688 w
(7) 1420 5688 w
(7) 1520 5688 w
(7) 1620 5688 w
(0) 1720 5688 w
(0) 1820 5688 w
(0 11 11 11) 1920 5688 w
(0) 2395 5688 w
(0) 2495 5688 w
(0 15 15 15 15) 2595 5688 w
(0) 3195 5688 w
(0) 720 5808 w
(3) 820 5808 w
(0) 920 5808 w
(0) 1020 5808 w
(0) 1120 5808 w
(0) 1220 5808 w
(0) 1320 5808 w
(7) 1420 5808 w
(0) 1520 5808 w
(0) 1620 5808 w
(0) 1720 5808 w
(0) 1820 5808 w
(0 11) 1920 5808 w
(0) 2145 5808 w
(0) 2245 5808 w
(0) 2345 5808 w
(0) 2445 5808 w
(0 15) 2545 5808 w
(0) 2770 5808 w
(0) 2870 5808 w
(0) 2970 5808 w
(0) 3070 5808 w
(0) 720 5928 w
(3) 820 5928 w
(0) 920 5928 w
(0) 1020 5928 w
(0) 1120 5928 w
(0) 1220 5928 w
(0) 1320 5928 w
(7) 1420 5928 w
(7) 1520 5928 w
(7) 1620 5928 w
(7) 1720 5928 w
(0) 1820 5928 w
(0 11 11 11 11) 1920 5928 w
(0) 2520 5928 w
(0 15) 2620 5928 w
(0) 2845 5928 w
(0) 2945 5928 w
(0) 3045 5928 w
(0) 3145 5928 w
(0) 720 6048 w
(0) 820 6048 w
(0) 920 6048 w
(0) 1020 6048 w
(0) 1120 6048 w
(0) 1220 6048 w
(0) 1320 6048 w
(0) 1420 6048 w
(0) 1520 6048 w
(0) 1620 6048 w
(0) 1720 6048 w
(0) 1820 6048 w
(0) 1920 6048 w
(0) 2020 6048 w
(0) 2120 6048 w
(0) 2220 6048 w
(0) 2320 6048 w
(0) 2420 6048 w
(0) 2520 6048 w
(0) 2620 6048 w
(0) 2720 6048 w
(0) 2820 6048 w
(0) 2920 6048 w
(0) 3020 6048 w
(There is a newline character at the end of each of these lines.) 720 6264 w
(Programs) 720 6420 w
(that) 1131 6420 w
(read) 1309 6420 w
(this) 1508 6420 w
(format) 1681 6420 w
(should) 1975 6420 w
(be) 2270 6420 w
(as) 2392 6420 w
(lenient) 2503 6420 w
(as) 2803 6420 w
(possible,) 2914 6420 w
(accepting) 3295 6420 w
(anything) 3705 6420 w
(that) 4083 6420 w
(looks) 4261 6420 w
(remotely) 4506 6420 w
(like) 4890 6420 w
(a PGM.) 720 6540 w
10 /Times-Bold f
(COMPATIBILITY) 720 6780 w
10 /Times-Roman f
(Before) 720 6972 w
(April) 1022 6972 w
(2000,) 1264 6972 w
(a) 1520 6972 w
(raw) 1595 6972 w
(format) 1775 6972 w
(PGM) 2072 6972 w
(file) 2320 6972 w
(could) 2484 6972 w
(not) 2737 6972 w
(have) 2896 6972 w
(a) 3115 6972 w
(maxval) 3190 6972 w
(greater) 3515 6972 w
(than) 3823 6972 w
(255.) 4027 6972 w
(Hence,) 4259 6972 w
(it) 4570 6972 w
(could) 4658 6972 w
(not) 4912 6972 w
(have more than one byte per sample.) 720 7092 w
(Old programs may depend on this.) 2236 7092 w
(Before) 720 7248 w
(July) 1018 7248 w
(2000,) 1212 7248 w
(there) 1464 7248 w
(could) 1690 7248 w
(be) 1939 7248 w
(at) 2060 7248 w
(most) 2159 7248 w
(one) 2381 7248 w
(image) 2552 7248 w
(in) 2824 7248 w
(a) 2930 7248 w
(PGM) 3002 7248 w
(file.) 3247 7248 w
(As) 3458 7248 w
(a) 3597 7248 w
(result,) 3669 7248 w
(most) 3944 7248 w
(tools) 4167 7248 w
(to) 4390 7248 w
(process) 4496 7248 w
(PGM) 4823 7248 w
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10 /Times-Roman f
(\255 3 \255) 2797 480 w
(files ignore \(and don't read\) any data after the first image.) 720 840 w
10 /Times-Bold f
(SEE ALSO) 720 1116 w
10 /Times-Roman f
(pnm, pbm, ppm, pam, libnetpbm, programs that process PGM,) 720 1272 w
10 /Times-Bold f
(AUTHOR) 720 1512 w
10 /Times-Roman f
(Copyright \(C\) 1989, 1991 by Jef Poskanzer.) 720 1668 w
10 /S1 f
(________________________________________________________________________) 720 1788 w
10 /Times-Bold f
(Table Of Contents) 720 2028 w
10 /LucidaSansUnicode22 f
(\031) 720 2220 w
10 /Times-Roman f
(NAME) 970 2220 w
10 /LucidaSansUnicode22 f
(\031) 720 2376 w
10 /Times-Roman f
(DESCRIPTION) 970 2376 w
10 /LucidaSansUnicode22 f
(\031) 720 2532 w
10 /Times-Roman f
(COMPATIBILITY) 970 2532 w
10 /LucidaSansUnicode22 f
(\031) 720 2688 w
10 /Times-Roman f
(SEE ALSO) 970 2688 w
10 /LucidaSansUnicode22 f
(\031) 720 2844 w
10 /Times-Roman f
(AUTHOR) 970 2844 w
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