<s>
.xnk	B-Operating_System
is	O
a	O
file	O
extension	O
used	O
by	O
Microsoft	B-Application
Outlook	I-Application
for	O
shortcuts	O
to	O
Outlook	O
entities	O
(	O
e.g.	O
,	O
a	O
folder	O
in	O
Public	O
Folders	O
)	O
.	O
</s>
<s>
In	O
Outlook	B-Application
2003	I-Application
,	O
a	O
user	O
can	O
double-click	O
such	O
a	O
file	O
to	O
open	O
it	O
.	O
</s>
