<s>
Redirected	B-General_Concept
walking	I-General_Concept
is	O
a	O
virtual	B-Application
reality	I-Application
locomotion	O
technique	O
that	O
enables	O
users	O
to	O
explore	O
a	O
virtual	B-Application
world	I-Application
that	O
is	O
considerably	O
larger	O
than	O
the	O
tracked	O
working	O
space	O
.	O
</s>
