<s>
A	O
Pool	B-Protocol
Element	I-Protocol
(	O
PE	O
)	O
is	O
a	O
server	B-Application
in	O
the	O
Reliable	B-Protocol
server	I-Protocol
pooling	I-Protocol
(	O
RSerPool	B-Protocol
)	O
framework	O
.	O
</s>
<s>
Answer	O
keep-alive	O
messages	O
from	O
its	O
Pool	B-Protocol
Registrar	I-Protocol
,	O
</s>
<s>
Deregister	O
from	O
a	O
handlespace	O
at	O
a	O
Pool	B-Protocol
Registrar	I-Protocol
upon	O
end	O
of	O
service	O
,	O
</s>
<s>
Register	O
into	O
a	O
handlespace	O
at	O
a	O
Pool	B-Protocol
Registrar	I-Protocol
,	O
</s>
