<s>
o	B-Language
:	I-Language
XML	I-Language
is	O
an	O
open	O
source	O
,	O
dynamically	O
typed	O
,	O
general-purpose	O
object-oriented	B-Language
programming	I-Language
language	I-Language
based	O
on	O
XML-syntax	O
.	O
</s>
<s>
It	O
has	O
threads	O
,	O
exception	B-General_Concept
handling	I-General_Concept
,	O
regular	O
expressions	O
and	O
namespaces	O
.	O
</s>
<s>
Additionally	O
o	B-Language
:	I-Language
XML	I-Language
has	O
an	O
expression	O
language	O
very	O
similar	O
to	O
XPath	O
that	O
allows	O
functions	O
to	O
be	O
invoked	O
on	O
nodes	O
and	O
node	O
sets	O
.	O
</s>
