<s>
In	O
computer	O
programming	O
,	O
Parameter	B-Language
Value	I-Language
Language	I-Language
(	O
PVL	O
)	O
is	O
a	O
markup	O
language	O
similar	O
to	O
XML	B-Protocol
.	O
</s>
<s>
It	O
is	O
commonly	O
employed	O
for	O
entries	O
in	O
the	O
Planetary	B-Application
Database	I-Application
System	I-Application
used	O
by	O
NASA	O
to	O
store	O
mission	O
data	O
,	O
among	O
other	O
uses	O
.	O
</s>
