<s>
EFL	B-Language
is	O
a	O
programming	O
language	O
originated	O
by	O
programmer	O
A.D.	O
Hall	O
in	O
the	O
late	O
1970s	O
and	O
completed	O
by	O
Stuart	O
Feldman	O
.	O
</s>
<s>
It	O
was	O
intended	O
to	O
improve	O
on	O
Fortran	B-Application
by	O
adding	O
control	O
structures	O
similar	O
to	O
those	O
of	O
C	B-Language
and	O
was	O
implemented	O
as	O
a	O
preprocessor	O
to	O
a	O
Fortran	B-Application
compiler	O
.	O
</s>
<s>
Its	O
name	O
is	O
an	O
initialism	O
for	O
Extended	O
Fortran	B-Application
Language	I-Application
.	O
</s>
<s>
It	O
is	O
roughly	O
a	O
superset	O
of	O
Ratfor	B-Language
.	O
</s>
