<s>
MacPaint	B-Operating_System
is	O
a	O
raster	B-Application
graphics	I-Application
editor	I-Application
developed	O
by	O
Apple	O
Computer	O
and	O
released	O
with	O
the	O
original	O
Macintosh	B-Device
personal	B-Device
computer	I-Device
on	O
January	O
24	O
,	O
1984	O
.	O
</s>
<s>
It	O
was	O
sold	O
separately	O
for	O
US$195	O
with	O
its	O
word	B-General_Concept
processing	I-General_Concept
counterpart	O
,	O
MacWrite	B-Operating_System
.	O
</s>
<s>
MacPaint	B-Operating_System
was	O
notable	O
because	O
it	O
could	O
generate	O
graphics	O
that	O
could	O
be	O
used	O
by	O
other	O
applications	O
.	O
</s>
<s>
It	O
taught	O
consumers	O
what	O
a	O
graphics-based	O
system	O
could	O
do	O
by	O
using	O
the	O
mouse	B-Device
,	O
the	O
clipboard	O
,	O
and	O
QuickDraw	B-Operating_System
picture	O
language	O
.	O
</s>
<s>
Pictures	O
could	O
be	O
cut	O
from	O
MacPaint	B-Operating_System
and	O
pasted	O
into	O
MacWrite	B-Operating_System
documents	O
.	O
</s>
<s>
The	O
original	O
MacPaint	B-Operating_System
was	O
developed	O
by	O
Bill	O
Atkinson	O
,	O
a	O
member	O
of	O
Apple	O
's	O
original	O
Macintosh	B-Device
development	O
team	O
.	O
</s>
<s>
Early	O
development	O
versions	O
of	O
MacPaint	B-Operating_System
were	O
called	O
MacSketch	O
,	O
still	O
retaining	O
part	O
of	O
the	O
name	O
of	O
its	O
roots	O
,	O
LisaSketch	O
.	O
</s>
<s>
The	O
last	O
version	O
of	O
MacPaint	B-Operating_System
was	O
version	O
2.0	O
,	O
released	O
in	O
1988	O
.	O
</s>
<s>
MacPaint	B-Operating_System
was	O
written	O
by	O
Bill	O
Atkinson	O
,	O
a	O
member	O
of	O
Apple	O
's	O
original	O
Macintosh	B-Device
development	O
team	O
.	O
</s>
<s>
The	O
original	O
MacPaint	B-Operating_System
consisted	O
of	O
5,804	O
lines	O
of	O
Pascal	B-Application
computer	O
code	O
,	O
augmented	O
by	O
another	O
2,738	O
lines	O
of	O
68000	B-Device
assembly	B-Language
language	I-Language
.	O
</s>
<s>
MacPaint	B-Operating_System
's	O
user	O
interface	O
was	O
designed	O
by	O
Susan	O
Kare	O
,	O
also	O
a	O
member	O
of	O
the	O
Macintosh	B-Device
team	O
.	O
</s>
<s>
Kare	O
also	O
beta-tested	O
MacPaint	B-Operating_System
before	O
release	O
.	O
</s>
<s>
MacPaint	B-Operating_System
allow	O
users	O
to	O
edit	O
a	O
576-by-720	O
pixel	O
,	O
72dpi	O
bitmap	O
(	O
slightly	O
wider	O
than	O
the	O
screen	O
,	O
and	O
slightly	O
more	O
than	O
twice	O
as	O
tall	O
as	O
the	O
screen	O
)	O
.	O
</s>
<s>
MacPaint	B-Operating_System
uses	O
two	O
offscreen	O
memory	B-General_Concept
buffers	I-General_Concept
to	O
avoid	O
flicker	O
when	O
dragging	O
shapes	O
or	O
images	O
across	O
the	O
screen	O
.	O
</s>
<s>
One	O
of	O
these	O
buffers	B-General_Concept
contained	O
the	O
existing	O
pixels	O
of	O
a	O
document	O
,	O
and	O
the	O
other	O
contained	O
the	O
pixels	O
of	O
its	O
previous	O
state	O
.	O
</s>
<s>
The	O
second	O
buffer	B-General_Concept
was	O
used	O
as	O
the	O
basis	O
of	O
the	O
software	O
's	O
undo	B-Application
feature	O
.	O
</s>
<s>
In	O
April	O
1983	O
,	O
the	O
software	O
's	O
name	O
was	O
changed	O
from	O
MacSketch	O
to	O
MacPaint	B-Operating_System
.	O
</s>
<s>
The	O
original	O
MacPaint	B-Operating_System
was	O
programmed	O
as	O
a	O
single-document	O
interface	O
.	O
</s>
<s>
This	O
differed	O
from	O
other	O
Macintosh	B-Device
software	O
at	O
the	O
time	O
,	O
which	O
allowed	O
users	O
to	O
move	O
windows	O
and	O
resize	O
them	O
.	O
</s>
<s>
The	O
original	O
MacPaint	B-Operating_System
did	O
incorporate	O
a	O
double	O
zoom	O
function	O
.	O
</s>
<s>
MacPaint	B-Operating_System
included	O
a	O
"	O
Goodies	O
"	O
menu	O
which	O
included	O
the	O
FatBits	O
tool	O
.	O
</s>
<s>
MacPaint	B-Operating_System
was	O
first	O
advertised	O
in	O
an	O
18-page	O
brochure	O
in	O
December	O
1983	O
,	O
following	O
the	O
earlier	O
announcement	O
of	O
the	O
Macintosh	B-Device
128K	I-Device
.	O
</s>
<s>
The	O
Macintosh	B-Device
was	O
released	O
on	O
January	O
24	O
,	O
1984	O
,	O
with	O
two	O
applications	O
,	O
MacPaint	B-Operating_System
and	O
MacWrite	B-Operating_System
.	O
</s>
<s>
The	O
Newsweek	O
advertisement	O
included	O
many	O
pages	O
dedicated	O
to	O
explaining	O
how	O
MacWrite	B-Operating_System
and	O
MacPaint	B-Operating_System
worked	O
together	O
.	O
</s>
<s>
After	O
launch	O
,	O
a	O
New	O
York	O
Times	O
reviewer	O
noted	O
how	O
MacPaint	B-Operating_System
unfolded	O
numerous	O
graphic	O
possibilities	O
for	O
the	O
personal	B-Device
computer	I-Device
;	O
he	O
went	O
further	O
to	O
say	O
"	O
it	O
is	O
better	O
than	O
anything	O
else	O
of	O
its	O
kind	O
offered	O
on	O
personal	B-Device
computers	I-Device
by	O
a	O
factor	O
of	O
10.	O
"	O
</s>
<s>
MacPaint	B-Operating_System
2.0	O
was	O
released	O
on	O
January	O
11	O
,	O
1988	O
,	O
by	O
Claris	O
.	O
</s>
<s>
The	O
original	O
MacPaint	B-Operating_System
operated	O
as	O
a	O
single-document	O
application	O
with	O
an	O
immovable	O
window	O
.	O
</s>
<s>
MacPaint	B-Operating_System
2.0	O
eliminated	O
this	O
limitation	O
,	O
introducing	O
a	O
fully	O
functioning	O
document	O
window	O
,	O
which	O
could	O
be	O
sized	O
up	O
to	O
8	O
x	O
10	O
"	O
.	O
</s>
<s>
Several	O
other	O
features	O
were	O
introduced	O
,	O
such	O
as	O
a	O
Zoom	O
tool	O
,	O
MagicEraser	O
tool	O
for	O
undo	B-Application
actions	O
and	O
stationary	O
documents	O
.	O
</s>
<s>
MacPaint	B-Operating_System
2.0	O
was	O
developed	O
by	O
David	O
Ramsey	O
,	O
a	O
developer	O
at	O
Claris	O
.	O
</s>
<s>
MacPaint	B-Operating_System
2.0	O
was	O
sold	O
for	O
US$125	O
,	O
with	O
a	O
US$25	O
upgrade	O
available	O
for	O
existing	O
users	O
of	O
MacPaint	B-Operating_System
.	O
</s>
<s>
Claris	O
discontinued	O
technical	O
support	O
for	O
the	O
original	O
MacPaint	B-Operating_System
in	O
1989	O
.	O
</s>
<s>
Claris	O
stopped	O
selling	O
MacPaint	B-Operating_System
in	O
early	O
1998	O
because	O
of	O
diminishing	O
sales	O
.	O
</s>
<s>
There	O
has	O
been	O
an	O
unofficial	O
update	O
called	O
MacPaint	B-Operating_System
X	O
which	O
is	O
3.0	O
beta	O
,	O
mainly	O
for	O
people	O
who	O
wished	O
to	O
be	O
able	O
to	O
use	O
the	O
program	O
.	O
</s>
<s>
Since	O
2010	O
,	O
MacPaint	B-Operating_System
1.3	O
'	O
s	O
source	O
code	O
(	O
written	O
in	O
a	O
combination	O
of	O
Assembly	B-Language
and	O
Pascal	B-Application
)	O
has	O
been	O
available	O
through	O
the	O
Computer	O
History	O
Museum	O
,	O
along	O
with	O
the	O
QuickDraw	B-Operating_System
source	O
code	O
,	O
a	O
library	O
to	O
draw	O
bitmapped	O
graphics	O
,	O
due	O
to	O
the	O
support	O
of	O
Steve	O
Jobs	O
.	O
</s>
<s>
MacPaint	B-Operating_System
inspired	O
other	O
companies	O
to	O
release	O
similar	O
products	O
for	O
other	O
platforms	O
;	O
within	O
a	O
year	O
a	O
half-dozen	O
clones	B-General_Concept
existed	O
for	O
the	O
Apple	O
II	O
and	O
IBM	O
PC	O
.	O
</s>
<s>
Some	O
of	O
these	O
included	O
Broderbund	O
's	O
Dazzle	B-Application
Draw	I-Application
for	O
the	O
Apple	O
II	O
,	O
Mouse	B-Device
Systems	O
 '	O
PCPaint	B-Application
for	O
the	O
PC	O
,	O
and	O
IBM	O
's	O
Color	O
Paint	O
for	O
the	O
IBM	B-Device
PCjr	I-Device
.	O
</s>
