<s>
SimpleText	B-Operating_System
is	O
the	O
native	B-Language
text	B-Application
editor	I-Application
for	O
the	O
Apple	O
classic	B-Application
Mac	I-Application
OS	I-Application
.	O
</s>
<s>
SimpleText	B-Operating_System
allows	O
text	B-Application
editing	I-Application
and	O
text	O
formatting	O
(	O
underline	O
,	O
italic	O
,	O
bold	O
,	O
etc	O
.	O
</s>
<s>
It	O
was	O
developed	O
to	O
integrate	O
the	O
features	O
included	O
in	O
the	O
different	O
versions	O
of	O
TeachText	B-Operating_System
that	O
were	O
created	O
by	O
various	O
software	O
development	O
groups	O
within	O
Apple	O
Computer	O
.	O
</s>
<s>
It	O
can	O
be	O
considered	O
similar	O
to	O
Windows	O
 '	O
WordPad	B-Application
application	O
.	O
</s>
<s>
In	O
later	O
versions	O
it	O
also	O
gained	O
additional	O
read	O
only	O
display	O
capabilities	O
for	O
PICT	B-Language
files	O
,	O
as	O
well	O
as	O
other	O
Mac	B-Application
OS	I-Application
built-in	O
formats	O
like	O
Quickdraw	O
GX	O
and	O
QTIF	B-Operating_System
,	O
3DMF	B-Operating_System
and	O
even	O
QuickTime	B-Application
movies	O
.	O
</s>
<s>
SimpleText	B-Operating_System
can	O
even	O
record	O
short	O
sound	O
samples	O
and	O
,	O
using	O
Apple	O
's	O
PlainTalk	B-Operating_System
speech	O
system	O
,	O
read	O
out	O
text	O
in	O
English	O
.	O
</s>
<s>
Users	O
who	O
wanted	O
to	O
add	O
sounds	O
longer	O
than	O
24seconds	O
,	O
however	O
,	O
needed	O
to	O
use	O
a	O
separate	O
program	O
to	O
create	O
the	O
sound	O
and	O
then	O
paste	O
the	O
desired	O
sound	O
into	O
the	O
document	O
using	O
ResEdit	B-Operating_System
.	O
</s>
<s>
SimpleText	B-Operating_System
superseded	O
TeachText	B-Operating_System
,	O
which	O
was	O
included	O
in	O
System	B-Application
Software	I-Application
up	O
until	O
it	O
was	O
replaced	O
in	O
1994	O
(	O
shipped	O
with	O
System	O
Update	O
3.0	O
and	O
System	B-Operating_System
7.1.2	I-Operating_System
)	O
.	O
</s>
<s>
The	O
need	O
for	O
TeachText	B-Operating_System
arose	O
after	O
Apple	O
stopped	O
bundling	O
MacWrite	B-Operating_System
,	O
to	O
ensure	O
that	O
every	O
user	O
could	O
open	O
and	O
read	O
Readme	O
documents	O
.	O
</s>
<s>
The	O
key	O
improvement	O
of	O
SimpleText	B-Operating_System
over	O
TeachText	B-Operating_System
was	O
the	O
addition	O
of	O
text	O
styling	O
.	O
</s>
<s>
The	O
underlying	B-Operating_System
OS	I-Operating_System
required	O
by	O
SimpleText	B-Operating_System
implemented	O
a	O
standard	O
styled	O
text	O
format	O
,	O
which	O
meant	O
that	O
SimpleText	B-Operating_System
could	O
support	O
multiple	O
fonts	O
and	O
font	O
sizes	O
.	O
</s>
<s>
Prior	O
Macintosh	O
OS	O
versions	O
lacked	O
this	O
feature	O
,	O
so	O
TeachText	B-Operating_System
supported	O
only	O
a	O
single	O
font	O
per	O
document	O
.	O
</s>
<s>
Adding	O
text	O
styling	O
features	O
made	O
SimpleText	B-Operating_System
WorldScript-savvy	O
,	O
meaning	O
that	O
it	O
can	O
use	O
Simplified	O
and	O
Traditional	O
Chinese	O
characters	O
.	O
</s>
<s>
Like	O
TeachText	B-Operating_System
,	O
SimpleText	B-Operating_System
was	O
also	O
limited	O
to	O
only	O
32kB	O
of	O
text	O
in	O
a	O
document	O
,	O
although	O
images	O
could	O
increase	O
the	O
total	O
file	O
size	O
beyond	O
this	O
limit	O
.	O
</s>
<s>
SimpleText	B-Operating_System
style	O
information	O
was	O
stored	O
in	O
the	O
file	O
's	O
resource	B-Operating_System
fork	I-Operating_System
in	O
such	O
a	O
way	O
that	O
if	O
the	O
resource	B-Operating_System
fork	I-Operating_System
was	O
stripped	O
(	O
such	O
as	O
by	O
uploading	O
to	O
a	O
non-Macintosh	O
server	O
)	O
,	O
the	O
text	O
information	O
would	O
be	O
retained	O
.	O
</s>
<s>
In	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
SimpleText	B-Operating_System
is	O
replaced	O
by	O
the	O
more	O
powerful	O
TextEdit	B-Application
application	O
,	O
which	O
reads	O
and	O
writes	O
more	O
document	O
formats	O
as	O
well	O
as	O
including	O
word	O
processor-like	O
features	O
such	O
as	O
a	O
ruler	O
and	O
spell	B-Application
checking	I-Application
.	O
</s>
<s>
TextEdit	B-Application
's	O
styled	O
text	O
format	O
is	O
RTF	O
,	O
which	O
is	O
able	O
to	O
survive	O
a	O
single-forked	O
file	O
system	O
intact	O
.	O
</s>
<s>
Apple	O
has	O
released	O
the	O
source	O
code	O
for	O
a	O
Carbon	B-Operating_System
version	O
of	O
SimpleText	B-Operating_System
in	O
the	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
Panther	I-Operating_System
(	O
10.3	B-Operating_System
)	O
Developer	O
Tools	O
.	O
</s>
<s>
If	O
the	O
10.3	B-Operating_System
Developer	O
Tools	O
are	O
installed	O
,	O
it	O
can	O
be	O
found	O
at	O
.	O
</s>
