<s>
PICT	B-Application
is	O
a	O
graphics	O
file	O
format	O
introduced	O
on	O
the	O
original	O
Apple	B-Device
Macintosh	I-Device
computer	I-Device
as	O
its	O
standard	O
metafile	O
format	O
.	O
</s>
<s>
It	O
allows	O
the	O
interchange	O
of	O
graphics	O
(	O
both	O
bitmapped	O
and	O
vector	O
)	O
,	O
and	O
some	O
limited	O
text	O
support	O
,	O
between	O
Mac	B-Device
applications	I-Device
,	O
and	O
was	O
the	O
native	O
graphics	O
format	O
of	O
QuickDraw	B-Operating_System
.	O
</s>
<s>
The	O
PICT	B-Application
file	O
format	O
consists	O
essentially	O
of	O
a	O
series	O
of	O
QuickDraw	B-Operating_System
commands	O
.	O
</s>
<s>
The	O
original	O
version	O
,	O
PICT	B-Application
1	O
,	O
was	O
designed	O
to	O
be	O
as	O
compact	O
as	O
possible	O
while	O
describing	O
vector	O
graphics	O
.	O
</s>
<s>
To	O
this	O
end	O
,	O
it	O
featured	O
single	O
byte	O
opcodes	B-Language
,	O
many	O
of	O
which	O
embodied	O
operations	O
such	O
as	O
"	O
do	O
the	O
previous	O
operation	O
again	O
"	O
.	O
</s>
<s>
With	O
the	O
introduction	O
of	O
the	O
Macintosh	B-Device
II	I-Device
and	O
Color	O
QuickDraw	B-Operating_System
,	O
PICT	B-Application
was	O
revised	O
to	O
version	O
2	O
.	O
</s>
<s>
This	O
version	O
featured	O
16-bit	O
opcodes	B-Language
and	O
numerous	O
changes	O
which	O
enhanced	O
its	O
utility	O
.	O
</s>
<s>
PICT	B-Application
1	O
opcodes	B-Language
were	O
supported	O
as	O
a	O
subset	O
for	O
backward	O
compatibility	O
.	O
</s>
<s>
Within	O
a	O
Mac	B-Device
application	O
,	O
any	O
sequence	O
of	O
drawing	O
operations	O
could	O
be	O
simply	O
recorded/encoded	O
to	O
the	O
PICT	B-Application
format	O
by	O
opening	O
a	O
"	O
Picture	O
"	O
,	O
then	O
closing	O
it	O
after	O
issuing	O
the	O
required	O
commands	O
.	O
</s>
<s>
By	O
saving	O
the	O
resulting	O
byte	O
stream	O
as	O
a	O
resource	B-Operating_System
,	O
a	O
PICT	B-Application
resource	B-Operating_System
resulted	O
,	O
which	O
could	O
be	O
loaded	O
and	O
played	O
back	O
at	O
any	O
time	O
.	O
</s>
<s>
The	O
same	O
stream	O
could	O
be	O
saved	O
to	O
a	O
data	O
file	O
on	O
disk	O
(	O
with	O
512	O
bytes	O
of	O
unused	O
header	O
space	O
added	O
)	O
as	O
a	O
PICT	B-Application
file	O
.	O
</s>
<s>
With	O
the	O
change	O
to	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
discontinuation	O
of	O
QuickDraw	B-Operating_System
,	O
PICT	B-Application
was	O
dropped	O
in	O
favor	O
of	O
Portable	B-Application
Document	I-Application
Format	I-Application
(	O
PDF	B-Application
)	O
as	O
the	O
native	O
metafile	O
format	O
,	O
though	O
PICT	B-Application
support	O
is	O
retained	O
by	O
many	O
applications	O
as	O
it	O
was	O
so	O
widely	O
supported	O
on	O
Classic	B-Application
Mac	I-Application
OS	I-Application
.	O
</s>
<s>
This	O
"	O
PICT	B-Application
"	O
image	O
format	O
supports	O
single	O
channel	O
and	O
color	O
channel	O
RGB	O
images	O
and	O
grayscale	O
images	O
.	O
</s>
<s>
Photoshop	B-Operating_System
no	O
longer	O
has	O
the	O
ability	O
to	O
open	O
PICT	B-Application
files	O
which	O
use	O
QuickDraw	B-Operating_System
object	O
data	O
(	O
but	O
can	O
open	O
simple	O
raster-based	O
PICTs	B-Application
)	O
,	O
and	O
cannot	O
save	O
files	O
in	O
PICT	B-Application
format	O
.	O
</s>
<s>
The	O
PICT	B-Application
format	O
has	O
two	O
versions	O
:	O
</s>
<s>
PICT	B-Application
1	O
format	O
:	O
The	O
old	O
format	O
that	O
only	O
allowed	O
eight	O
colors	O
and	O
focused	O
on	O
compact	O
storage	O
.	O
</s>
<s>
PICT	B-Application
2	O
format	O
:	O
A	O
superset	O
of	O
format	O
1	O
that	O
supports	O
4	O
,	O
8	O
,	O
16	O
and	O
24-bit	O
color	O
and	O
greyscale	O
images	O
.	O
</s>
<s>
Furthermore	O
certain	O
compressed	O
PixMap	O
types	O
can	O
be	O
included	O
using	O
QuickTime	B-Application
.	O
</s>
<s>
With	O
the	O
QuickTime	B-Application
2.0	O
multimedia	O
framework	O
,	O
Apple	O
added	O
support	O
for	O
compression	O
using	O
JPEG	O
or	O
any	O
other	O
QuickTime	B-Application
compressor	O
to	O
bitmaps	O
embedded	O
in	O
PICT	B-Application
data	O
.	O
</s>
