This file is indexed.

/usr/lib/blt2.5/bltGraph.pro is in tk8.6-blt2.5 2.5.3+dfsg-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
%%BeginProlog
%
% PostScript prolog file of the BLT graph widget.
%
% Copyright 1989-1992 Regents of the University of California.
% Permission to use, copy, modify, and distribute this
% software and its documentation for any purpose and without
% fee is hereby granted, provided that the above copyright
% notice appear in all copies.  The University of California
% makes no representations about the suitability of this
% software for any purpose.  It is provided "as is" without
% express or implied warranty.
%
% Copyright 1991-1997 Bell Labs Innovations for Lucent Technologies.
%
% Permission to use, copy, modify, and distribute this software and its
% documentation for any purpose and without fee is hereby granted, provided
% that the above copyright notice appear in all copies and that both that the
% copyright notice and warranty disclaimer appear in supporting documentation,
% and that the names of Lucent Technologies any of their entities not be used
% in advertising or publicity pertaining to distribution of the software
% without specific, written prior permission.
%
% Lucent Technologies disclaims all warranties with regard to this software,
% including all implied warranties of merchantability and fitness.  In no event
% shall Lucent Technologies be liable for any special, indirect or
% consequential damages or any damages whatsoever resulting from loss of use,
% data or profits, whether in an action of contract, negligence or other
% tortuous action, arising out of or in connection with the use or performance
% of this software.
%

200 dict begin

/BaseRatio 1.3467736870885982 def	% Ratio triangle base / symbol size
/BgColorProc 0 def			% Background color routine (symbols)
/DrawSymbolProc 0 def			% Routine to draw symbol outline/fill
/StippleProc 0 def			% Stipple routine (bar segments)
/DashesProc 0 def			% Dashes routine (line segments)
  
% Define the array ISOLatin1Encoding (which specifies how characters are 
% encoded for ISO-8859-1 fonts), if it isn't already present (Postscript 
% level 2 is supposed to define it, but level 1 doesn't). 
 
systemdict /ISOLatin1Encoding known not { 
  /ISOLatin1Encoding [ 
    /space /space /space /space /space /space /space /space 
    /space /space /space /space /space /space /space /space 
    /space /space /space /space /space /space /space /space 
    /space /space /space /space /space /space /space /space 
    /space /exclam /quotedbl /numbersign /dollar /percent /ampersand 
    /quoteright 
    /parenleft /parenright /asterisk /plus /comma /minus /period /slash 
    /zero /one /two /three /four /five /six /seven 
    /eight /nine /colon /semicolon /less /equal /greater /question 
    /at /A /B /C /D /E /F /G 
    /H /I /J /K /L /M /N /O 
    /P /Q /R /S /T /U /V /W 
    /X /Y /Z /bracketleft /backslash /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 /y /z /braceleft /bar /braceright /asciitilde /space 
    /space /space /space /space /space /space /space /space 
    /space /space /space /space /space /space /space /space 
    /dotlessi /grave /acute /circumflex /tilde /macron /breve /dotaccent 
    /dieresis /space /ring /cedilla /space /hungarumlaut /ogonek /caron 
    /space /exclamdown /cent /sterling /currency /yen /brokenbar /section 
    /dieresis /copyright /ordfeminine /guillemotleft /logicalnot /hyphen 
    /registered /macron 
    /degree /plusminus /twosuperior /threesuperior /acute /mu /paragraph 
    /periodcentered 
    /cedillar /onesuperior /ordmasculine /guillemotright /onequarter 
    /onehalf /threequarters /questiondown 
    /Agrave /Aacute /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla 
    /Egrave /Eacute /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex 
    /Idieresis 
    /Eth /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply 
    /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn 
    /germandbls 
    /agrave /aacute /acircumflex /atilde /adieresis /aring /ae /ccedilla 
    /egrave /eacute /ecircumflex /edieresis /igrave /iacute /icircumflex 
    /idieresis 
    /eth /ntilde /ograve /oacute /ocircumflex /otilde /odieresis /divide 
    /oslash /ugrave /uacute /ucircumflex /udieresis /yacute /thorn 
    /ydieresis 
  ] def 
} if 

% font ISOEncode font 
% This procedure changes the encoding of a font from the default 
% Postscript encoding to ISOLatin1.  It is typically invoked just 
% before invoking "setfont".  The body of this procedure comes from 
% Section 5.6.1 of the Postscript book. 

/ISOEncode { 
  dup length dict
  begin 
    {1 index /FID ne {def} {pop pop} ifelse} forall 
    /Encoding ISOLatin1Encoding def 
    currentdict 
  end 

  % I'm not sure why it's necessary to use "definefont" on this new 
  % font, but it seems to be important; just use the name "Temporary" 
  % for the font. 

  /Temporary exch definefont 
} bind def 

/Stroke {
  gsave
    stroke
  grestore
} def

/Fill {
  gsave
    fill
  grestore
} def

/SetFont { 	
  % Stack: pointSize fontName
  findfont exch scalefont ISOEncode setfont
} def

/Box {
  % Stack: x y width height
  newpath
  exch 4 2 roll moveto
  dup 0 rlineto
  exch 0 exch rlineto
  neg 0 rlineto
  closepath
} def

/SetFgColor {
  % Stack: red green blue
  CL 0 eq { 
    pop pop pop 0 0 0 
  } if
  setrgbcolor
  CL 1 eq { 
    currentgray setgray 
  } if
} def

/SetBgColor {
  % Stack: red green blue
  CL 0 eq { 
    pop pop pop 1 1 1 
  } if
  setrgbcolor
  CL 1 eq { 
    currentgray setgray 
  } if
} def

% The next two definitions are taken from "$tk_library/prolog.ps"

% desiredSize EvenPixels closestSize
%
% The procedure below is used for stippling.  Given the optimal size
% of a dot in a stipple pattern in the current user coordinate system,
% compute the closest size that is an exact multiple of the device's
% pixel size.  This allows stipple patterns to be displayed without
% aliasing effects.

/EvenPixels {
  % Compute exact number of device pixels per stipple dot.
  dup 0 matrix currentmatrix dtransform
  dup mul exch dup mul add sqrt

  % Round to an integer, make sure the number is at least 1, and compute
  % user coord distance corresponding to this.
  dup round dup 1 lt {pop 1} if
  exch div mul
} bind def

% width height string filled StippleFill --
%
% Given a path and other graphics information already set up, this
% procedure will fill the current path in a stippled fashion.  "String"
% contains a proper image description of the stipple pattern and
% "width" and "height" give its dimensions.  If "filled" is true then
% it means that the area to be stippled is gotten by filling the
% current path (e.g. the interior of a polygon); if it's false, the
% area is gotten by stroking the current path (e.g. a wide line).
% Each stipple dot is assumed to be about one unit across in the
% current user coordinate system.

% width height string StippleFill --
%
% Given a path already set up and a clipping region generated from
% it, this procedure will fill the clipping region with a stipple
% pattern.  "String" contains a proper image description of the
% stipple pattern and "width" and "height" give its dimensions.  Each
% stipple dot is assumed to be about one unit across in the current
% user coordinate system.  This procedure trashes the graphics state.

/StippleFill {
    % The following code is needed to work around a NeWSprint bug.

    /tmpstip 1 index def

    % Change the scaling so that one user unit in user coordinates
    % corresponds to the size of one stipple dot.
    1 EvenPixels dup scale

    % Compute the bounding box occupied by the path (which is now
    % the clipping region), and round the lower coordinates down
    % to the nearest starting point for the stipple pattern.  Be
    % careful about negative numbers, since the rounding works
    % differently on them.

    pathbbox
    4 2 roll
    5 index div dup 0 lt {1 sub} if cvi 5 index mul 4 1 roll
    6 index div dup 0 lt {1 sub} if cvi 6 index mul 3 2 roll

    % Stack now: width height string y1 y2 x1 x2
    % Below is a doubly-nested for loop to iterate across this area
    % in units of the stipple pattern size, going up columns then
    % across rows, blasting out a stipple-pattern-sized rectangle at
    % each position

    6 index exch {
	2 index 5 index 3 index {
	    % Stack now: width height string y1 y2 x y

	    gsave
	    1 index exch translate
	    5 index 5 index true matrix tmpstip imagemask
	    grestore
	} for
	pop
    } for
    pop pop pop pop pop
} bind def


/LS {	% Stack: x1 y1 x2 y2
  newpath 4 2 roll moveto lineto stroke
} def

/EndText {
  %Stack :
  grestore
} def

/BeginText {
  %Stack :  w h theta centerX centerY
  gsave
    % Translate the origin to the center of bounding box and rotate
    translate neg rotate
    % Translate back to the origin of the text region
    -0.5 mul exch -0.5 mul exch translate
} def

/DrawAdjText {
  %Stack : str strWidth x y
  moveto				% Go to the text position
  exch dup dup 4 2 roll

  % Adjust character widths to get desired overall string width
  % adjust X = (desired width - real width)/#chars

  stringwidth pop sub exch
  length div
  0 3 -1 roll

  % Flip back the scale so that the string is not drawn in reverse

  gsave
    1 -1 scale
    ashow
  grestore
} def

/DrawBitmap {
  % Stack: ?bgColorProc? boolean centerX centerY width height theta imageStr
  gsave
    6 -2 roll translate			% Translate to center of bounding box
    4 1 roll neg rotate			% Rotate by theta
    
    % Find upperleft corner of bounding box
    
    2 copy -.5 mul exch -.5 mul exch translate
    2 copy scale			% Make pixel unit scale
    newpath
    0 0 moveto 0 1 lineto 1 1 lineto 1 0 lineto
    closepath
    
    % Fill rectangle with background color
    
    4 -1 roll { 
      gsave 
	4 -1 roll exec fill 
      grestore 
    } if
    
    % Paint the image string into the unit rectangle
    
    2 copy true 3 -1 roll 0 0 5 -1 roll 0 0 6 array astore 5 -1 roll
    imagemask
  grestore
} def

% Symbols:

% Skinny-cross
/Sc {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate 45 rotate
    0 0 3 -1 roll Sp
  grestore
} def

% Skinny-plus
/Sp {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate
    2 idiv
    dup 2 copy
    newpath neg 0 moveto 0 lineto
    DrawSymbolProc
    newpath neg 0 exch moveto 0 exch lineto
    DrawSymbolProc
  grestore
} def

% Cross
/Cr {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate 45 rotate
    0 0 3 -1 roll Pl
  grestore
} def

% Plus
/Pl {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate
    dup 2 idiv
    exch 6 idiv

    %
    %          2   3		The plus/cross symbol is a
    %				closed polygon of 12 points.
    %      0   1   4    5	The diagram to the left
    %           x,y		represents the positions of
    %     11  10   7    6	the points which are computed
    %				below.
    %          9   8
    %

    newpath
    2 copy exch neg exch neg moveto dup neg dup lineto
    2 copy neg exch neg lineto 2 copy exch neg lineto
    dup dup neg lineto 2 copy neg lineto 2 copy lineto
    dup dup lineto 2 copy exch lineto 2 copy neg exch lineto
    dup dup neg exch lineto exch neg exch lineto
    closepath
    DrawSymbolProc
  grestore
} def

% Circle
/Ci {
  % Stack: x y symbolSize
  gsave
    3 copy pop
    moveto newpath
    2 div 0 360 arc
    closepath DrawSymbolProc
  grestore
} def

% Square
/Sq {
  % Stack: x y symbolSize
  gsave
    dup dup 2 div dup
    6 -1 roll exch sub exch
    5 -1 roll exch sub 4 -2 roll Box
    DrawSymbolProc
  grestore
} def

% Line
/Li {
  % Stack: x y symbolSize
  gsave
    3 1 roll exch 3 -1 roll 2 div 3 copy
    newpath
    sub exch moveto add exch lineto
    stroke
  grestore
} def

% Diamond
/Di {
  % Stack: x y symbolSize
  gsave
    3 1 roll translate 45 rotate 0 0 3 -1 roll Sq
  grestore
} def
    
% Triangle
/Tr {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate
    BaseRatio mul 0.5 mul		% Calculate 1/2 base
    dup 0 exch 30 cos mul		% h1 = height above center point
    neg					% b2 0 -h1
    newpath moveto			% point 1;  b2
    dup 30 sin 30 cos div mul		% h2 = height below center point
    2 copy lineto			% point 2;  b2 h2
    exch neg exch lineto		% 
    closepath
    DrawSymbolProc
  grestore
} def

% Arrow
/Ar {
  % Stack: x y symbolSize
  gsave
    3 -2 roll translate
    BaseRatio mul 0.5 mul		% Calculate 1/2 base
    dup 0 exch 30 cos mul		% h1 = height above center point
					% b2 0 h1
    newpath moveto			% point 1;  b2
    dup 30 sin 30 cos div mul		% h2 = height below center point
    neg					% -h2 b2
    2 copy lineto			% point 2;  b2 h2
    exch neg exch lineto		% 
    closepath
    DrawSymbolProc
  grestore
} def

% Bitmap
/Bm {
  % Stack: x y symbolSize
  gsave
    3 1 roll translate pop DrawSymbolProc
  grestore
} def

%%EndProlog

%%BeginSetup
gsave					% Save the graphics state

% Default line/text style parameters

1 setlinewidth				% width
1 setlinejoin				% join
0 setlinecap				% cap
[] 0 setdash				% dashes

/CL 0 def				% Set color level mode
0 0 0 setrgbcolor			% color