<s>
Encapsulated	B-Language
PostScript	I-Language
(	O
EPS	B-Language
)	O
is	O
a	O
Document	B-Language
Structuring	I-Language
Convention	I-Language
(	O
DSC	O
)	O
conforming	O
PostScript	B-Language
document	O
format	O
usable	O
as	O
a	O
graphics	O
file	O
format	O
.	O
</s>
<s>
The	O
basis	O
of	O
early	O
versions	O
of	O
the	O
Adobe	O
Illustrator	O
Artwork	O
file	O
format	O
is	O
formed	O
by	O
EPS	B-Language
together	O
with	O
the	O
DSC	O
Open	O
Structuring	O
Conventions	O
.	O
</s>
<s>
EPS	B-Language
files	I-Language
are	O
more-or-less	O
self-contained	O
,	O
reasonably	O
predictable	O
,	O
PostScript	B-Language
documents	O
that	O
describe	O
an	O
image	O
or	O
drawing	O
and	O
can	O
be	O
placed	O
within	O
another	O
PostScript	B-Language
document	O
.	O
</s>
<s>
An	O
EPS	B-Language
file	I-Language
is	O
essentially	O
a	O
PostScript	B-Language
program	O
,	O
saved	O
as	O
a	O
single	O
file	O
that	O
includes	O
a	O
low-resolution	O
preview	O
"	O
encapsulated	O
"	O
within	O
it	O
,	O
allowing	O
some	O
programs	O
to	O
display	O
a	O
preview	O
on	O
the	O
screen	O
.	O
</s>
<s>
An	O
EPS	B-Language
file	I-Language
contains	O
a	O
BoundingBox	B-Algorithm
DSC	O
comment	O
,	O
describing	O
the	O
rectangle	O
containing	O
the	O
image	O
described	O
by	O
the	O
EPS	B-Language
file	I-Language
.	O
</s>
<s>
Applications	O
can	O
use	O
this	O
information	O
to	O
lay	O
out	O
the	O
page	O
,	O
even	O
if	O
they	O
are	O
unable	O
to	O
directly	O
render	O
the	O
PostScript	B-Language
inside	O
.	O
</s>
<s>
EPS	B-Language
files	I-Language
frequently	O
include	O
a	O
preview	O
picture	O
of	O
the	O
content	O
for	O
on-screen	O
display	O
.	O
</s>
<s>
Without	O
this	O
preview	O
,	O
the	O
applications	O
would	O
have	O
to	O
directly	O
render	O
the	O
PostScript	B-Language
(	O
PS	B-Language
)	O
data	O
inside	O
the	O
EPS	B-Language
,	O
which	O
was	O
beyond	O
the	O
capabilities	O
of	O
most	O
machines	O
that	O
used	O
PostScript	B-Language
.	O
</s>
<s>
When	O
EPS	B-Language
was	O
first	O
implemented	O
,	O
the	O
only	O
machines	O
widely	O
using	O
PostScript	B-Language
were	O
Apple	B-Device
Macintoshes	I-Device
.	O
</s>
<s>
These	O
machines	O
could	O
not	O
directly	O
render	O
the	O
PostScript	B-Language
,	O
which	O
presented	O
Adobe	O
with	O
the	O
dilemma	O
of	O
how	O
to	O
provide	O
a	O
preview	O
image	O
for	O
the	O
designer	O
while	O
also	O
including	O
the	O
PS	B-Language
version	O
for	O
the	O
printer	O
.	O
</s>
<s>
On	O
the	O
Mac	B-Device
this	O
turned	O
out	O
to	O
be	O
easy	O
to	O
solve	O
,	O
as	O
the	O
Mac	B-Device
file	O
system	O
includes	O
two	O
parts	O
(	O
known	O
as	O
forks	O
)	O
that	O
are	O
logically	O
referred	O
to	O
as	O
one	O
file	O
.	O
</s>
<s>
By	O
placing	O
the	O
PostScript	B-Language
in	O
the	O
data	B-Operating_System
fork	I-Operating_System
and	O
a	O
standard	O
Mac	B-Device
PICT	B-Language
resource	O
in	O
the	O
resource	B-Operating_System
fork	I-Operating_System
,	O
both	O
images	O
could	O
be	O
moved	O
about	O
together	O
invisibly	O
as	O
if	O
they	O
were	O
one	O
file	O
.	O
</s>
<s>
While	O
a	O
PICT	B-Language
preview	O
often	O
contains	O
a	O
bitmap	O
,	O
it	O
could	O
also	O
contain	O
a	O
vector	O
representation	O
of	O
the	O
whole	O
image	O
,	O
providing	O
very	O
high	O
quality	O
previews	O
.	O
</s>
<s>
When	O
faced	O
with	O
the	O
same	O
problems	O
on	O
Microsoft	O
Windows-based	O
versions	O
of	O
their	O
programs	O
,	O
Adobe	O
chose	O
to	O
instead	O
add	O
a	O
TIFF	O
file	O
encoded	O
into	O
the	O
header	O
section	O
of	O
the	O
PostScript	B-Language
.	O
</s>
<s>
WMF	O
has	O
the	O
potential	O
to	O
provide	O
vector	O
previews	O
,	O
similar	O
to	O
PICT	B-Language
on	O
the	O
Mac	B-Device
.	O
</s>
<s>
Both	O
of	O
these	O
PC	O
format	O
EPS	B-Language
files	I-Language
have	O
a	O
particular	O
disadvantage	O
:	O
because	O
the	O
PostScript	B-Language
data	O
,	O
header	O
,	O
and	O
preview	O
are	O
all	O
in	O
the	O
same	O
file	O
,	O
they	O
will	O
cause	O
printing	O
errors	O
if	O
a	O
program	O
does	O
not	O
understand	O
the	O
format	O
well	O
enough	O
to	O
extract	O
only	O
the	O
PostScript	B-Language
data	O
.	O
</s>
<s>
A	O
fourth	O
format	O
known	O
as	O
a	O
EPSI	O
includes	O
an	O
ASCII-encoded	O
preview	O
bitmap	O
.	O
</s>
<s>
It	O
is	O
mainly	O
used	O
on	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
An	O
application	O
that	O
is	O
unable	O
to	O
interpret	O
an	O
EPS	B-Language
file	I-Language
's	O
preview	O
will	O
typically	O
show	O
an	O
empty	O
box	O
on	O
screen	O
,	O
but	O
it	O
will	O
be	O
able	O
to	O
print	O
the	O
file	O
correctly	O
.	O
</s>
<s>
Due	O
to	O
the	O
ability	O
to	O
use	O
embedded	O
scripts	O
,	O
Microsoft	O
removed	O
support	O
for	O
EPS	B-Language
files	I-Language
in	O
Microsoft	B-Application
Office	I-Application
programs	O
in	O
May	O
2018	O
.	O
</s>
