<s>
The	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
for	I-Language
Interactive	I-Language
Systems	I-Language
(	O
UMLi	B-Language
)	O
is	O
a	O
conservative	O
extension	O
of	O
the	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
for	O
user	O
interface	O
design	O
.	O
</s>
<s>
UMLi	B-Language
was	O
developed	O
in	O
the	O
period	O
between	O
1998	O
and	O
2002	O
as	O
part	O
of	O
Paulo	O
Pinheiro	O
's	O
Ph.D.	O
Thesis	O
at	O
the	O
University	O
of	O
Manchester	O
.	O
</s>
<s>
UMLi	B-Language
is	O
based	O
on	O
model-based	O
user	O
interface	O
development	O
environments	O
(	O
MB-UIDEs	O
)	O
,	O
which	O
provide	O
the	O
capability	O
to	O
design	O
and	O
implement	O
user	O
interfaces	O
in	O
a	O
declarative	O
and	O
systematic	O
way	O
.	O
</s>
