<s>
In	O
computer	O
user	O
interface	O
design	O
,	O
a	O
master	B-Application
–	I-Application
detail	I-Application
interface	I-Application
displays	O
a	O
master	O
list	O
and	O
the	O
details	O
for	O
the	O
currently	O
selected	O
item	O
.	O
</s>
<s>
Examples	O
of	O
a	O
master-detail	B-Application
relationship	O
are	O
:	O
a	O
set	O
of	O
purchase	O
orders	O
and	O
a	O
set	O
of	O
line	O
items	O
belonging	O
to	O
each	O
purchase	O
order	O
,	O
an	O
expense	O
report	O
with	O
a	O
set	O
of	O
expense	O
line	O
items	O
or	O
a	O
department	O
with	O
a	O
list	O
of	O
employees	O
belonging	O
to	O
it	O
.	O
</s>
<s>
An	O
application	O
can	O
use	O
this	O
master-detail	B-Application
relationship	O
to	O
enable	O
users	O
to	O
navigate	O
through	O
the	O
purchase	O
order	O
data	O
and	O
see	O
the	O
detail	O
data	O
for	O
line	O
items	O
only	O
related	O
to	O
the	O
master	O
purchase	O
order	O
selected	O
.	O
</s>
