<s>
Domain-specific	B-Language
entertainment	I-Language
languages	I-Language
are	O
a	O
group	O
of	O
domain-specific	B-Language
languages	I-Language
that	O
are	O
used	O
describe	O
computer	O
games	O
or	O
environments	O
,	O
or	O
potentially	O
used	O
for	O
other	O
entertainment	O
such	O
as	O
video	O
or	O
music	O
.	O
</s>
<s>
In	O
LPMuds	B-Application
,	O
LPC	B-Application
is	O
used	O
to	O
extend	O
the	O
system	O
.	O
</s>
<s>
TinyMUCK	B-Application
and	O
derivatives	O
use	O
the	O
language	O
MUF	O
.	O
</s>
<s>
MUME	B-Protocol
developed	O
and	O
publishes	O
its	O
language	O
Mudlle	O
.	O
</s>
