<s>
The	O
Common	B-Language
Business	I-Language
Communication	I-Language
Language	I-Language
(	O
CBCL	O
)	O
is	O
a	O
communications	O
language	O
proposed	O
by	O
John	O
McCarthy	O
that	O
foreshadowed	O
much	O
of	O
XML	B-Protocol
.	O
</s>
<s>
The	O
language	O
consists	O
of	O
a	O
basic	O
framework	O
of	O
hierarchical	O
markup	O
derived	O
from	O
S-expressions	B-Protocol
,	O
coupled	O
with	O
some	O
general	O
principles	O
about	O
use	O
and	O
extensibility	O
.	O
</s>
