<s>
The	O
Abstract	B-Language
Rewriting	I-Language
Machine	I-Language
(	O
ARM	O
)	O
is	O
a	O
virtual	B-Architecture
machine	I-Architecture
which	O
implements	O
term	O
rewriting	O
for	O
minimal	B-Language
term	I-Language
rewriting	I-Language
systems	I-Language
.	O
</s>
<s>
Minimal	B-Language
term	I-Language
rewriting	I-Language
systems	I-Language
are	O
left-linear	O
term	O
rewriting	O
systems	O
in	O
which	O
each	O
rule	O
takes	O
on	O
one	O
of	O
six	O
forms	O
:	O
</s>
