<s>
Code	B-General_Concept
page	I-General_Concept
1009	I-General_Concept
(	O
CCSID	O
1009	O
)	O
,	O
also	O
known	O
as	O
CP1009	B-General_Concept
(	O
IBM	O
)	O
and	O
CP20105	B-General_Concept
(	O
Microsoft	O
)	O
,	O
is	O
the	O
International	O
Reference	O
Version	O
(	O
IRV	O
)	O
of	O
ISO	O
646:1983	O
until	O
its	O
redefinition	O
in	O
ISO/IEC	O
646:1991	O
.	O
</s>
