<s>
A	O
performance	B-Application
supervision	I-Application
system	I-Application
(	O
PSS	O
)	O
is	O
a	O
software	O
system	O
used	O
to	O
improve	O
the	O
performance	O
of	O
a	O
process	O
plant	O
.	O
</s>
