<s>
The	O
Xerox	B-Device
Sigma	I-Device
9	I-Device
,	O
also	O
known	O
as	O
the	O
XDS	O
Sigma	O
9	O
,	O
was	O
a	O
high-speed	O
,	O
general	O
purpose	O
computer	O
.	O
</s>
<s>
The	O
Xerox	B-Device
Sigma	I-Device
9	I-Device
worked	O
very	O
well	O
for	O
library	O
databases	O
and	O
was	O
used	O
in	O
quite	O
a	O
few	O
University	O
libraries	O
around	O
the	O
country	O
.	O
</s>
