<s>
Zettair	B-Application
is	O
a	O
compact	O
text	O
search	B-Application
engine	I-Application
for	O
indexing	B-Application
and	O
search	O
of	O
HTML	O
(	O
or	O
TREC	B-Language
)	O
collections	O
.	O
</s>
<s>
It	O
is	O
an	O
open	B-Application
source	I-Application
software	I-Application
developed	O
by	O
a	O
group	O
of	O
researchers	O
at	O
RMIT	O
University	O
.	O
</s>
<s>
It	O
has	O
a	O
single	O
executable	B-Application
,	O
which	O
performs	O
both	O
on-the-fly	O
indexing	B-Application
and	O
searching	O
,	O
with	O
a	O
command-line	B-Application
interface	I-Application
.	O
</s>
<s>
It	O
is	O
licensed	O
under	O
the	O
terms	O
of	O
the	O
GPL	B-License
license	I-License
.	O
</s>
