<s>
The	O
Composite	B-Library
UI	I-Library
Application	I-Library
Block	I-Library
(	O
or	O
CAB	O
)	O
is	O
an	O
addition	O
to	O
Microsoft	B-Application
's	I-Application
.NET	I-Application
Framework	I-Application
for	O
creating	O
complex	O
user	B-Application
interfaces	I-Application
made	O
of	O
loosely	O
coupled	O
components	O
.	O
</s>
<s>
Developed	O
by	O
Microsoft	O
's	O
patterns	O
&	O
practices	O
team	O
,	O
CAB	O
is	O
used	O
exclusively	O
for	O
developing	O
Windows	B-Application
Forms	I-Application
.	O
</s>
<s>
A	O
derivative	O
version	O
of	O
CAB	O
exists	O
in	O
both	O
the	O
Web	O
Client	O
and	O
Mobile	O
Client	O
Software	B-Application
Factories	I-Application
as	O
well	O
.	O
</s>
<s>
It	O
encourages	O
the	O
developer	O
to	O
use	O
either	O
the	O
Model-View-Controller	O
or	O
Model-View-Presenter	O
architectural	O
pattern	O
,	O
to	O
encourage	O
reuse	O
of	O
the	O
individual	O
User	B-Application
Controls	I-Application
(	O
referred	O
to	O
in	O
CAB	O
as	O
"	O
SmartParts	O
"	O
)	O
by	O
not	O
coupling	O
them	O
with	O
their	O
underlying	O
data	O
elements	O
or	O
presentation	O
code	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	O
foundation	O
of	O
the	O
Smart	O
Client	O
Software	B-Application
Factory	I-Application
,	O
another	O
patterns	O
&	O
practices	O
deliverable	O
.	O
</s>
<s>
It	O
is	O
also	O
part	O
of	O
the	O
Mobile	O
Client	O
Software	B-Application
Factory	I-Application
which	O
is	O
a	O
version	O
of	O
the	O
Smart	O
Client	O
Software	B-Application
Factory	I-Application
for	O
use	O
with	O
the	O
.NET	B-Operating_System
Compact	I-Operating_System
Framework	I-Operating_System
2.0	O
.	O
</s>
