<s>
FORMAC	B-Language
,	O
the	O
FORmula	B-Language
MAnipulation	I-Language
Compiler	I-Language
,	O
was	O
the	O
first	O
computer	B-General_Concept
algebra	I-General_Concept
system	I-General_Concept
to	O
have	O
significant	O
use	O
.	O
</s>
<s>
The	O
compiler	O
was	O
implemented	O
as	O
a	O
preprocessor	O
taking	O
the	O
FORMAC	B-Language
program	O
and	O
converting	O
it	O
to	O
a	O
FORTRAN	O
IV	O
program	O
which	O
was	O
in	O
turn	O
compiled	O
without	O
further	O
user	O
intervention	O
.	O
</s>
<s>
FORMAC	B-Language
supported	O
computation	O
,	O
manipulation	O
,	O
and	O
use	O
of	O
symbolic	O
expressions	O
.	O
</s>
