<s>
be	O
directly	O
accessed	O
by	O
clients	O
using	O
HTTP	B-Protocol
protocol	I-Protocol
.	O
</s>
<s>
The	O
following	O
operations	O
are	O
supported	O
via	O
XCAP	B-Language
protocol	O
in	O
a	O
client-server	O
interaction	O
:	O
</s>
<s>
The	O
XCAP	B-Language
addressing	O
mechanism	O
is	O
based	O
on	O
XPath	B-Language
,	O
that	O
provides	O
the	O
ability	O
to	O
navigate	O
around	O
the	O
XML	B-Protocol
tree	O
.	O
</s>
<s>
The	O
following	O
applications	O
are	O
provided	O
by	O
XCAP	B-Language
,	O
by	O
using	O
specific	O
auid	O
(	O
Application	O
Unique	O
Id	O
)	O
:	O
</s>
<s>
XCAP	B-Language
capabilities	O
(	O
auid	O
=	O
xcap-caps	O
)	O
.	O
</s>
<s>
XML	B-Protocol
manipulation	O
(	O
auid	O
=	O
XML-manipulation	O
)	O
.	O
</s>
<s>
XML-manipulation	O
application	O
usage	O
defines	O
how	O
XCAP	B-Language
is	O
used	O
to	O
manipulate	O
the	O
contents	O
of	O
XML	B-Protocol
based	O
presence	O
documents	O
.	O
</s>
<s>
The	O
XCAP	B-Language
protocol	O
is	O
based	O
on	O
the	O
following	O
ROOT	O
standards	O
:	O
</s>
