<s>
Notability	B-Application
is	O
a	O
note-taking	O
application	O
for	O
iOS	B-Application
and	O
macOS	B-Application
.	O
</s>
<s>
The	O
application	O
allows	O
note-taking	O
and	O
the	O
annotation	O
of	O
PDF	B-Application
files	I-Application
.	O
</s>
<s>
Notability	B-Application
is	O
the	O
best-selling	O
paid	O
note-taking	O
app	O
on	O
the	O
App	B-Application
Store	I-Application
.	O
</s>
<s>
Like	O
other	O
note-taking	O
software	O
,	O
Notability	B-Application
supports	O
typing	O
and	O
drawing	O
on	O
a	O
virtual	O
notepad	O
.	O
</s>
<s>
The	O
app	O
supports	O
directly	O
editing	O
and	O
exporting	O
to	O
the	O
PDF	B-Application
file	I-Application
format	O
,	O
and	O
supports	O
many	O
other	O
document	O
file	O
formats	O
.	O
</s>
<s>
Files	O
are	O
synced	O
to	O
iCloud	B-Application
and	O
users	O
can	O
share	O
files	O
with	O
other	O
users	O
via	O
a	O
link-based	O
system	O
.	O
</s>
<s>
Notability	B-Application
supports	O
the	O
usage	O
of	O
a	O
stylus	B-Operating_System
on	O
desktop	O
platforms	O
and	O
the	O
Apple	B-Device
Pencil	I-Device
on	O
the	O
iPad	O
.	O
</s>
