R Under development (unstable) (2025-02-18 r87748 ucrt) -- "Unsuffered Consequences"
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> 
> suppressPackageStartupMessages(library(xdvir))
> 
> readDVI(system.file("DVI", "test-pdftex.dvi", package="xdvir"))
pre          version=2, num=25400000, den=473628672, mag=1000,
             comment= TeX output 2024.10.14:1225
bop          counters=1 0 0 0 0 0 0 0 0 0, p=-1
right3       b=-4736287
down3        a=-4736287
xxx1         k=30
             x=papersize=16.16669pt,6.15079pt
xxx1         k=49
             x=ps::%%HiResBoundingBox: 0 0 16.16669pt 6.15079pt.
xxx1         k=30
             x=papersize=16.16669pt,6.15079pt
y4           a=1073741823 
push
z4           a=-1073741823 
y0 
push
z0 
xxx1         k=26
             x=header=l3backend-dvips.pro
down3        a=403098
push
push
push
fnt_def_1    fontnum=7, checksum=1274110073, scale=655360, design=655360,
             fontname=cmr10
fnt_num_7
set_char_116 74
set_char_101 65
set_char_115 73
set_char_116 74
pop
pop
pop
pop
pop
eop
post
fnt_def_1    fontnum=7, checksum=1274110073, scale=655360, design=655360,
             fontname=cmr10
post_post
> 
> readDVI(system.file("DVI", "test-luatex.dvi", package="xdvir"))
pre          version=2, num=25400000, den=473628672, mag=1000,
             comment= LuaTeX output 2024.10.14:1225
bop          counters=1 0 0 0 0 0 0 0 0 0, p=-1
push
push
right3       b=-4736287
down3        a=-4736287
xxx1         k=26
             x=header=l3backend-dvips.pro
push
push
push
down3        a=403046
fnt_def_1    fontnum=24, checksum=0, scale=655360, design=655360,
             fontname=[lmroman10-regular]:+tlig;
fnt_num_24
set_char_116 74
set_char_101 65
set_char_115 73
set_char_116 74
pop
pop
pop
pop
pop
eop
post
fnt_def_1    fontnum=24, checksum=0, scale=655360, design=655360,
             fontname=[lmroman10-regular]:+tlig;
post_post
> 
> readDVI(system.file("DVI", "test-xetex.xdv", package="xdvir"))
pre          version=7, num=25400000, den=473628672, mag=1000,
             comment= XeTeX output 2024.10.14:1227
bop          counters=1 0 0 0 0 0 0 0 0 0, p=-1
xxx1         k=43
             x=pdf:pagesize width 16.16pt height 6.25998pt
down3        a=-4326033
push
down3        a=-410254
down3        a=410254
push
push
push
push
right3       b=-4736287
down2        a=-7208
x_fnt_def    fontnum=24, ptsize=655360
             fontname=/usr/share/texmf/fonts/opentype/public/lm/lmroman10-regular.otf [0]
fnt_num_24
x_glyph      id=105, x=0, y=0
x_glyph      id=50, x=254935, y=0
x_glyph      id=98, x=545915, y=0
x_glyph      id=105, x=804127, y=0 
pop
pop
pop
pop
pop
eop
post
x_fnt_def    fontnum=24, ptsize=655360
             fontname=/usr/share/texmf/fonts/opentype/public/lm/lmroman10-regular.otf [0]
post_post
> 
> readDVI(system.file("DVI", "test-uptex.dvi", package="xdvir"))
pre          version=2, num=25400000, den=473628672, mag=1000,
             comment= TeX output 2024.10.14:1228
bop          counters=1 0 0 0 0 0 0 0 0 0, p=-1
right3       b=-4736287
down3        a=-4736287
xxx1         k=30
             x=papersize=16.16669pt,6.15079pt
xxx1         k=49
             x=ps::%%HiResBoundingBox: 0 0 16.16669pt 6.15079pt.
xxx1         k=30
             x=papersize=16.16669pt,6.15079pt
y4           a=1073741823 
push
z4           a=-1073741823 
y0 
push
z0 
xxx1         k=26
             x=header=l3backend-dvips.pro
down3        a=403098
push
push
push
fnt_def_1    fontnum=7, checksum=1274110073, scale=655360, design=655360,
             fontname=cmr10
fnt_num_7
set_char_116 74
set_char_101 65
set_char_115 73
set_char_116 74
pop
pop
pop
pop
pop
eop
post
fnt_def_1    fontnum=7, checksum=1274110073, scale=655360, design=655360,
             fontname=cmr10
post_post
> 
> proc.time()
   user  system elapsed 
   0.32    0.10    3.93