<s>
The	O
Kaleidoscope	B-Application
programming	I-Application
language	I-Application
is	O
a	O
constraint	B-Application
programming	I-Application
language	O
embedding	O
constraints	B-Application
into	O
an	O
imperative	B-Application
object-oriented	B-Language
language	I-Language
.	O
</s>
<s>
There	O
are	O
three	O
versions	O
of	O
Kaleidoscope	B-Application
which	O
show	O
an	O
evolution	O
from	O
declarative	O
to	O
an	O
increasingly	O
imperative	B-Application
style	O
.	O
</s>
<s>
Without	O
constraints	B-Application
:	O
</s>
<s>
With	O
constraints	B-Application
:	O
</s>
