<s>
An	O
integration	B-General_Concept
tree	I-General_Concept
(	O
or	O
GUI	B-General_Concept
tree	I-General_Concept
)	O
is	O
a	O
graph	O
that	O
visualises	O
all	O
the	O
GUI	B-Application
components	O
of	O
a	O
software	O
.	O
</s>
<s>
Each	O
node	O
of	O
the	O
tree	O
show	O
the	O
GUI	B-Application
components	O
used	O
in	O
this	O
software	O
.	O
</s>
<s>
The	O
components	O
on	O
the	O
leaves	O
of	O
the	O
tree	O
are	O
modeless	B-General_Concept
GUI	B-Application
elements	O
,	O
those	O
on	O
the	O
nodes	O
are	O
modal	O
GUI	B-Application
elements	O
.	O
</s>
<s>
GUIs	B-Application
are	O
highly	O
involved	O
entities	O
.	O
</s>
