<s>
It	O
is	O
provided	O
on	O
their	O
iOS	B-Application
,	O
iPadOS	B-Operating_System
and	O
macOS	B-Application
operating	O
systems	O
,	O
the	O
latter	O
starting	O
with	O
OS	B-Operating_System
X	I-Operating_System
Mountain	I-Operating_System
Lion	I-Operating_System
.	O
</s>
<s>
It	O
functions	O
as	O
a	O
service	O
for	O
making	O
short	O
text	O
notes	O
,	O
which	O
can	O
be	O
synchronized	O
between	O
devices	O
using	O
Apple	O
's	O
iCloud	B-Application
service	O
.	O
</s>
<s>
The	O
application	O
uses	O
a	O
similar	O
interface	O
on	O
iOS	B-Application
and	O
macOS	B-Application
,	O
with	O
a	O
non-textured	O
paper	O
background	O
for	O
notes	O
and	O
light	O
yellow	O
icons	O
,	O
suggesting	O
pencil	B-Device
or	O
crayon	O
.	O
</s>
<s>
This	O
design	O
was	O
replaced	O
in	O
OS	B-Operating_System
X	I-Operating_System
Mavericks	I-Operating_System
and	O
iOS	B-Operating_System
7	I-Operating_System
.	O
</s>
<s>
Starting	O
with	O
iOS	B-Operating_System
9	I-Operating_System
,	O
Notes	O
received	O
a	O
significant	O
functional	O
overhaul	O
:	O
iCloud	B-Application
sync	O
(	O
instead	O
of	O
IMAP	B-Protocol
;	O
in-line	O
with	O
the	O
OS	B-Operating_System
X	I-Operating_System
El	I-Operating_System
Capitan	I-Operating_System
version	O
)	O
,	O
the	O
ability	O
to	O
create	O
sketches	O
(	O
and	O
later	O
,	O
support	O
for	O
Apple	B-Device
Pencil	I-Device
)	O
,	O
advanced	O
text	O
formatting	O
options	O
,	O
several	O
styles	O
of	O
lists	O
,	O
rich	O
web	O
and	O
map	B-Application
link	O
previews	O
,	O
support	O
for	O
more	O
file	O
type	O
attachments	O
,	O
a	O
corresponding	O
dedicated	O
attachment	O
browser	O
and	O
a	O
system	O
share	O
extension	O
point	O
for	O
saving	O
web	O
links	O
,	O
images	O
,	O
etc	O
.	O
</s>
<s>
As	O
of	O
iOS	B-Operating_System
9.3	I-Operating_System
,	O
individual	O
notes	O
can	O
be	O
password-protected	O
(	O
with	O
the	O
ability	O
to	O
use	O
Touch	O
ID	O
to	O
unlock	O
all	O
notes	O
on	O
compatible	O
devices	O
)	O
,	O
however	O
,	O
only	O
one	O
password	O
can	O
be	O
set	O
for	O
all	O
notes	O
locked	O
henceforth	O
.	O
</s>
<s>
In	O
iOS	B-Operating_System
10	I-Operating_System
,	O
Notes	O
now	O
has	O
a	O
collaboration	O
feature	O
for	O
many	O
people	O
to	O
work	O
on	O
a	O
note	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
The	O
update	O
to	O
Notes	O
released	O
with	O
iOS	B-Operating_System
11	I-Operating_System
adds	O
tables	O
,	O
pinned	O
notes	O
,	O
a	O
document	O
scanner	O
,	O
graph	O
and	O
lined	O
paper	O
,	O
monospaced	O
text	O
support	O
,	O
handwriting	O
search	O
and	O
improved	O
integration	O
with	O
Apple	B-Device
Pencil	I-Device
.	O
</s>
<s>
Tapping	O
the	O
Pencil	B-Device
on	O
the	O
Lock	O
screen	O
will	O
bring	O
up	O
a	O
new	O
note	O
,	O
with	O
drawing	O
active	O
;	O
the	O
Pencil	B-Device
can	O
also	O
be	O
used	O
while	O
in	O
the	O
Notes	B-Operating_System
app	I-Operating_System
to	O
start	O
an	O
inline	O
drawing	O
.	O
</s>
<s>
In	O
iOS	B-Application
13	O
,	O
the	O
Notes	B-Operating_System
app	I-Operating_System
includes	O
a	O
new	O
gallery	O
view	O
that	O
displays	O
notes	O
as	O
thumbnails	O
,	O
and	O
shared	O
folders	O
.	O
</s>
<s>
Prior	O
to	O
Mountain	O
Lion	O
,	O
Apple	B-Operating_System
Mail	I-Operating_System
on	O
macOS	B-Application
supported	O
a	O
mailbox	O
containing	O
notes	O
,	O
which	O
was	O
synced	O
with	O
notes	O
in	O
the	O
Notes	B-Operating_System
application	I-Operating_System
in	O
iOS	B-Application
.	O
</s>
<s>
This	O
situation	O
was	O
a	O
kludge	B-Architecture
:	O
as	O
Apple	B-Operating_System
Mail	I-Operating_System
already	O
implemented	O
the	O
IMAP	B-Protocol
mailbox	O
synchronization	O
protocol	O
,	O
it	O
could	O
also	O
sync	O
notes	O
with	O
minimal	O
additional	O
work	O
.	O
</s>
<s>
In	O
Mountain	O
Lion	O
,	O
notes	O
were	O
moved	O
to	O
a	O
separate	O
Notes	B-Operating_System
application	I-Operating_System
.	O
</s>
<s>
Created	O
notes	O
are	O
synced	O
through	O
all	O
the	O
user	O
's	O
Apple	O
devices	O
through	O
the	O
iCloud	B-Application
service	O
.	O
</s>
<s>
Additionally	O
,	O
unlike	O
the	O
iPad	O
,	O
iPhone	O
,	O
and	O
iPod	B-Device
touch	I-Device
versions	O
,	O
the	O
OS	B-Operating_System
X	I-Operating_System
Mountain	I-Operating_System
Lion	I-Operating_System
Notes	B-Operating_System
application	I-Operating_System
allows	O
for	O
images	O
to	O
be	O
embedded	O
within	O
notes	O
.	O
</s>
<s>
Attachments	O
cannot	O
be	O
viewed	O
on	O
iOS	B-Application
devices	O
.	O
</s>
<s>
Due	O
to	O
the	O
proprietary	B-Application
nature	O
of	O
the	O
data	O
storage	O
mechanism	O
for	O
the	O
Apple	B-Operating_System
Notes	I-Operating_System
app(s )	O
,	O
users	O
of	O
this	O
software	O
may	O
be	O
locked	O
into	O
it	O
without	O
a	O
convenient	O
way	O
to	O
export	O
all	O
Notes	O
data	O
to	O
a	O
different	O
format	O
.	O
</s>
<s>
As	O
of	O
OS	B-Operating_System
X	I-Operating_System
El	I-Operating_System
Capitan	I-Operating_System
,	O
Notes	O
received	O
a	O
significant	O
functional	O
overhaul	O
(	O
in-line	O
with	O
the	O
iOS	B-Operating_System
9	I-Operating_System
version	O
)	O
,	O
with	O
major	O
features	O
including	O
:	O
iCloud	B-Application
sync	O
,	O
the	O
ability	O
to	O
view	O
sketches	O
created	O
on	O
the	O
iOS	B-Application
counterpart	O
,	O
advanced	O
text	O
formatting	O
options	O
,	O
several	O
styles	O
of	O
lists	O
,	O
rich	O
web	O
and	O
map	B-Application
link	O
previews	O
,	O
support	O
for	O
more	O
file	O
type	O
attachments	O
,	O
a	O
corresponding	O
dedicated	O
attachment	O
browser	O
and	O
a	O
system	O
share	O
extension	O
point	O
for	O
saving	O
web	O
links	O
,	O
images	O
,	O
etc	O
.	O
</s>
<s>
As	O
of	O
OS	B-Operating_System
X	I-Operating_System
El	I-Operating_System
Capitan	I-Operating_System
4	O
,	O
individual	O
notes	O
can	O
be	O
password-protected	O
,	O
with	O
the	O
password	O
syncing	O
across	O
compatible	O
devices	O
.	O
</s>
<s>
The	O
update	O
to	O
Notes	O
released	O
with	O
macOS	B-Operating_System
High	I-Operating_System
Sierra	I-Operating_System
adds	O
tables	O
.	O
</s>
<s>
Social	O
media	O
users	O
have	O
often	O
used	O
the	O
Notes	B-Operating_System
application	I-Operating_System
to	O
write	O
short	O
notes	O
which	O
can	O
then	O
be	O
posted	O
as	O
a	O
screenshot	B-Application
to	O
social	O
media	O
sites	O
such	O
as	O
Instagram	B-Application
or	O
Twitter	B-Application
.	O
</s>
