<s>
In	O
Microsoft	B-Application
Windows	I-Application
,	O
the	O
Briefcase	B-Application
is	O
a	O
special	B-General_Concept
folder	I-General_Concept
that	O
supports	O
a	O
simple	O
two-way	O
file	B-Application
synchronization	I-Application
between	O
itself	O
and	O
another	O
folder	B-Application
.	O
</s>
<s>
The	O
Briefcase	B-Application
is	O
designed	O
for	O
mobile	O
PC	O
users	O
so	O
that	O
they	O
may	O
transfer	O
it	O
to	O
a	O
removable	O
drive	O
and	O
have	O
it	O
synchronize	O
with	O
the	O
computer	O
to	O
which	O
the	O
removable	O
drive	O
is	O
attached	O
.	O
</s>
<s>
It	O
follows	O
the	O
same	O
metaphor	O
as	O
the	O
file	B-Operating_System
and	O
file	B-Operating_System
folder	B-Application
and	O
then	O
,	O
while	O
the	O
file	B-Operating_System
management	O
tasks	O
are	O
performed	O
by	O
Windows	O
Explorer	O
,	O
the	O
briefcase	B-Application
behaves	O
just	O
like	O
another	O
folder	B-Application
,	O
i.e.	O
</s>
<s>
The	O
Windows	B-Application
Briefcase	I-Application
was	O
introduced	O
in	O
Windows	B-Application
95	I-Application
and	O
was	O
deprecated	B-General_Concept
(	O
although	O
not	O
removed	O
)	O
in	O
Windows	B-Application
8	I-Application
and	O
completely	O
disabled	O
(	O
but	O
still	O
present	O
and	O
accessible	O
via	O
modification	O
of	O
the	O
Windows	B-Protocol
Registry	I-Protocol
)	O
in	O
Windows	B-Operating_System
10	I-Operating_System
until	O
it	O
was	O
finally	O
removed	O
in	O
Windows	B-Operating_System
10	I-Operating_System
build	O
14942	O
.	O
</s>
<s>
The	O
Windows	B-Application
Briefcase	I-Application
synchronizes	O
files	O
and	O
folders	O
within	O
itself	O
with	O
those	O
in	O
any	O
other	O
folder	B-Application
,	O
even	O
on	O
a	O
removable	O
writable	O
media	O
or	O
the	O
network	O
.	O
</s>
<s>
To	O
use	O
the	O
Briefcase	B-Application
,	O
users	O
only	O
need	O
to	O
use	O
Windows	O
Explorer	O
and	O
then	O
drag	O
or	O
copy	O
their	O
files	O
into	O
the	O
Briefcase	B-Application
once	O
.	O
</s>
<s>
Any	O
further	O
changes	O
to	O
either	O
the	O
files	O
on	O
disk	O
or	O
those	O
in	O
the	O
Briefcase	B-Application
are	O
synchronized	O
whenever	O
the	O
user	O
right-clicks	O
on	O
the	O
briefcase	B-Application
and	O
selects	O
Update	O
All	O
.	O
</s>
<s>
If	O
there	O
are	O
differences	O
between	O
the	O
copies	O
,	O
the	O
Briefcase	B-Application
shows	O
a	O
dialog	O
box	O
with	O
an	O
icon	O
and	O
a	O
description	O
indicating	O
the	O
action	O
it	O
will	O
take	O
when	O
synchronizing	O
;	O
that	O
is	O
,	O
whether	O
it	O
will	O
replace	O
the	O
copy	O
in	O
the	O
Briefcase	B-Application
with	O
the	O
external	O
file	B-Operating_System
or	O
vice	O
versa	O
,	O
or	O
leave	O
both	O
versions	O
unchanged	O
.	O
</s>
<s>
The	O
action	O
the	O
Briefcase	B-Application
will	O
take	O
is	O
configurable	O
by	O
right	O
clicking	O
the	O
icon	O
.	O
</s>
<s>
For	O
items	O
deleted	O
in	O
either	O
the	O
Briefcase	B-Application
or	O
the	O
main	O
original	O
folder	B-Application
,	O
the	O
Briefcase	B-Application
can	O
create	O
a	O
copy	O
of	O
the	O
missing	O
item	O
.	O
</s>
<s>
Users	O
can	O
also	O
sync	O
individual	O
items	O
in	O
the	O
Briefcase	B-Application
by	O
selecting	O
the	O
item	O
first	O
and	O
then	O
clicking	O
the	O
Update	O
button	O
instead	O
of	O
Update	O
All	O
.	O
</s>
<s>
The	O
update	O
status	O
of	O
each	O
item	O
is	O
stored	O
in	O
the	O
Briefcase	B-Application
.	O
</s>
<s>
If	O
any	O
item	O
does	O
not	O
link	O
to	O
any	O
original	O
item	O
outside	O
the	O
briefcase	B-Application
,	O
(	O
for	O
example	O
when	O
the	O
drive	O
containing	O
the	O
briefcase	B-Application
is	O
inserted	O
in	O
a	O
secondary	O
computer	O
,	O
or	O
the	O
original	O
has	O
been	O
deleted	O
in	O
the	O
main	O
computer	O
)	O
it	O
is	O
called	O
an	O
orphan	O
.	O
</s>
<s>
Most	O
special	B-General_Concept
folders	I-General_Concept
in	O
Windows	O
(	O
such	O
as	O
Briefcase	B-Application
folders	O
)	O
have	O
a	O
hidden	B-Application
file	I-Application
(	O
with	O
"	O
system	O
"	O
attribute	B-Application
)	O
called	O
Desktop.ini	B-Protocol
.	O
</s>
<s>
They	O
may	O
also	O
have	O
Windows	B-Protocol
Registry	I-Protocol
entries	O
describing	O
them	O
.	O
</s>
<s>
The	O
Desktop.ini	B-Protocol
for	O
a	O
Briefcase	B-Application
contains	O
the	O
following	O
lines	O
:	O
</s>
<s>
The	O
CLSID	O
setting	O
specifies	O
the	O
class	O
identifier	O
of	O
the	O
"	O
Briefcase	B-Application
"	O
class	O
,	O
which	O
is	O
required	O
for	O
a	O
folder	B-Application
to	O
appear	O
as	O
a	O
Briefcase	B-Application
.	O
</s>
<s>
The	O
RunWizard	O
setting	O
specifies	O
whether	O
to	O
display	O
the	O
"	O
Welcome	O
to	O
the	O
Windows	B-Application
Briefcase	I-Application
"	O
dialog	O
when	O
the	O
user	O
opens	O
the	O
Briefcase	B-Application
.	O
</s>
<s>
A	O
second	O
file	B-Operating_System
called	O
"	O
Briefcase	B-Application
Database	O
"	O
,	O
bearing	O
"	O
hidden	O
"	O
and	O
"	O
system	O
"	O
attributes	O
,	O
and	O
no	O
filename	O
extension	O
,	O
serves	O
as	O
the	O
Briefcase	B-Application
index	O
.	O
</s>
<s>
Its	O
fourCC	B-Application
is	O
"	O
DDSH	O
"	O
.	O
</s>
<s>
The	O
Briefcase	B-Application
folder	B-Application
itself	O
must	O
have	O
"	O
read-only	O
"	O
or	O
"	O
system	O
"	O
file	B-Application
attributes	I-Application
(	O
default	O
is	O
read-only	O
)	O
in	O
order	O
to	O
display	O
as	O
a	O
Briefcase	B-Application
.	O
</s>
<s>
The	O
Desktop.ini	B-Protocol
and	O
Briefcase	B-Application
Database	O
files	O
are	O
not	O
required	O
to	O
have	O
the	O
hidden	O
or	O
system	O
attributes	O
in	O
order	O
for	O
the	O
parent	O
folder	B-Application
to	O
display	O
as	O
a	O
Briefcase	B-Application
.	O
</s>
<s>
When	O
Microsoft	B-Application
Access	I-Application
is	O
installed	O
,	O
the	O
Windows	B-Application
Briefcase	I-Application
gets	O
special	O
functionality	O
due	O
to	O
installed	O
Microsoft	B-Application
Office	I-Application
files	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
as	O
a	O
replication	O
tool	O
for	O
Access	O
databases	O
that	O
use	O
the	O
Jet	O
database	O
engine	O
by	O
dragging	O
the	O
file	B-Operating_System
to	O
the	O
Briefcase	B-Application
so	O
that	O
the	O
database	O
is	O
automatically	O
converted	O
into	O
replicable	O
form	O
.	O
</s>
<s>
The	O
Design	O
Master	O
can	O
be	O
left	O
at	O
the	O
source	O
and	O
replica	O
put	O
into	O
the	O
Briefcase	B-Application
or	O
vice	O
versa	O
.	O
</s>
<s>
When	O
synchronizing	O
,	O
the	O
replicas	O
are	O
merged	O
by	O
the	O
Briefcase	B-Application
reconciler	O
.	O
</s>
<s>
The	O
Windows	B-Application
Shell	I-Application
also	O
allowed	O
developers	O
to	O
create	O
their	O
own	O
document	O
briefcase	B-Application
reconcilers	O
to	O
combine	O
different	O
input	O
versions	O
of	O
a	O
document	O
to	O
produce	O
a	O
single	O
,	O
new	O
output	O
version	O
of	O
the	O
document	O
.	O
</s>
