<s>
The	O
Meta-IV	B-Language
(	O
pronounced	O
like	O
"	O
metaphor	O
"	O
)	O
was	O
an	O
early	O
version	O
of	O
the	O
specification	O
language	O
of	O
the	O
Vienna	B-Application
Development	I-Application
Method	I-Application
formal	O
method	O
for	O
the	O
development	O
of	O
computer-based	O
systems	O
.	O
</s>
<s>
*	O
colloquially	O
known	O
as	O
:	O
META-IV	B-Language
,	O
Bjørner&Jones	O
1978	O
,	O
p24	O
.	O
</s>
<s>
The	O
Meta-IV	B-Language
was	O
the	O
Specification	O
language	O
that	O
accompanied	O
the	O
method	O
,	O
and	O
the	O
VDM-SL	B-Application
is	O
the	O
current	O
standardized	O
form	O
of	O
that	O
language	O
.	O
</s>
<s>
distinguished	O
by	O
notational	O
differences	O
employed	O
in	O
the	O
specification	O
language	O
Meta-IV	B-Language
—	O
the	O
Danish	O
School	O
and	O
the	O
English	O
School.	O
"	O
</s>
