<s>
The	O
object	B-General_Concept
locative	I-General_Concept
environment	I-General_Concept
coordinate	I-General_Concept
system	I-General_Concept
,	O
known	O
as	O
OLE	B-General_Concept
coordinate	I-General_Concept
system	I-General_Concept
,	O
is	O
a	O
coordinate	O
system	O
used	O
for	O
virtual	O
environments	O
in	O
which	O
movement	O
constraints	O
are	O
not	O
only	O
defined	O
by	O
the	O
3D	O
coordinates	O
of	O
objects	O
but	O
by	O
the	O
position	O
of	O
the	O
camera	O
,	O
as	O
well	O
.	O
</s>
<s>
Echochrome	B-Application
,	O
a	O
game	O
for	O
the	B-Operating_System
PS3	I-Operating_System
and	O
PSP	B-Operating_System
,	O
uses	O
this	O
technique	O
as	O
an	O
entertainment	O
factor	O
.	O
</s>
