<s>
Xerte	B-Application
is	O
open	B-Application
source	I-Application
software	I-Application
for	O
authoring	O
learning	O
objects	O
.	O
</s>
<s>
It	O
is	O
developed	O
by	O
the	O
University	O
of	O
Nottingham	O
in	O
the	O
UK	O
and	O
is	O
free	O
to	O
download	O
from	O
the	O
Xerte	B-Application
Community	O
website	O
.	O
</s>
