<s>
STDU	B-Language
Viewer	I-Language
is	O
computer	O
software	O
,	O
a	O
compact	O
viewer	O
for	O
many	O
computer	O
file	O
formats	O
:	O
Portable	B-Application
Document	I-Application
Format	I-Application
(	O
PDF	B-Application
)	O
,	O
World	O
Wide	O
Fund	O
for	O
Nature	O
(	O
WWF	O
)	O
,	O
DjVu	O
,	O
comic	O
book	O
archive	O
(	O
CBR	O
or	O
CBZ	O
)	O
,	O
FB2	O
,	O
ePUB	O
,	O
XML	B-Device
Paper	I-Device
Specification	I-Device
(	O
XPS	O
)	O
,	O
Text	O
Compression	O
for	O
Reader	O
(	O
TCR	O
)	O
,	O
Mobipocket	O
(	O
MOBI	O
)	O
,	O
AZW	O
,	O
multi-page	O
TIFF	O
,	O
text	B-General_Concept
file	I-General_Concept
(	O
TXT	O
)	O
,	O
PalmDoc	O
(	O
PDB	B-Application
)	O
,	O
Windows	B-Application
Metafile	O
(	O
EMF	O
)	O
,	O
Windows	B-Application
Metafile	O
(	O
WMF	O
)	O
,	O
bitmap	O
(	O
BMP	B-Device
)	O
,	O
Graphics	O
Interchange	O
Format	O
(	O
GIF	O
)	O
,	O
JPEG-JPG	O
,	O
Portable	O
Network	O
Graphics	O
(	O
PNG	O
)	O
,	O
Photoshop	O
Document	O
(	O
PSD	O
)	O
,	O
PiCture	O
eXchang	O
(	O
PCX-DCX	O
)	O
.	O
</s>
<s>
It	O
works	O
under	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
is	O
free	B-License
for	O
non-commercial	O
use	O
.	O
</s>
<s>
STDU	B-Language
viewer	I-Language
is	O
developed	O
in	O
the	O
programming	O
language	O
C++	B-Language
.	O
</s>
<s>
STDU	B-Language
Viewer	I-Language
has	O
a	O
tabbed	O
document	O
interface	O
.	O
</s>
<s>
The	O
first	O
STDU	B-Language
Viewer	I-Language
was	O
version	O
1.0.60	O
,	O
released	O
on	O
13	O
September	O
2007	O
.	O
</s>
<s>
It	O
supported	O
three	O
formats	O
:	O
PDF	B-Application
(	O
including	O
hyperlinks	O
embedded	O
)	O
,	O
DjVu	O
,	O
and	O
Tagged	O
Image	O
File	O
Format	O
(	O
TIFF	O
)	O
.	O
</s>
<s>
STDU	B-Language
Viewer	I-Language
was	O
appreciated	O
for	O
its	O
feature	O
to	O
read	O
a	O
wide	O
range	O
of	O
ebook	O
formats	O
and	O
can	O
be	O
considered	O
as	O
a	O
replacement	O
for	O
Adobe	B-Application
Acrobat	I-Application
’s	O
reader	O
.	O
</s>
<s>
STDU	B-Language
Viewer	I-Language
was	O
included	O
in	O
the	O
list	O
of	O
top	O
50	O
freeware	B-License
of	O
2009	O
and	O
best	O
software	O
for	O
students	O
.	O
</s>
<s>
The	O
program	O
does	O
n't	O
support	O
formats	O
for	O
online	B-Protocol
help	I-Protocol
Microsoft	B-Protocol
Compiled	I-Protocol
HTML	I-Protocol
Help	I-Protocol
(	O
CHM	O
)	O
,	O
Microsoft	B-Operating_System
Reader	I-Operating_System
(	O
LIT	O
)	O
,	O
document	O
(	O
DOC	B-Operating_System
)	O
,	O
and	O
HyperText	B-Language
Markup	I-Language
Language	I-Language
(	O
HTML	B-Language
)	O
.	O
</s>
<s>
When	O
printing	O
PDF	B-Application
document	O
,	O
a	O
large	O
temporary	O
file	O
is	O
created	O
,	O
so	O
the	O
printing	O
process	O
is	O
slow	O
.	O
</s>
