<s>
IFTRAN	B-Language
(	O
née	O
Iftran	B-Language
)	O
was	O
created	O
in	O
1972	O
by	O
E	O
.	O
F	O
.	O
Miller	O
at	O
General	O
Research	O
Corporation	O
,	O
Santa	O
Barbara	O
,	O
California	O
as	O
a	O
mechanism	O
to	O
support	O
structured	B-Language
programming	I-Language
concepts	O
in	O
a	O
FORTRAN-based	O
environment	O
.	O
</s>
<s>
IFTRAN	B-Language
had	O
these	O
basic	O
structured	B-Language
programming	I-Language
constructs	O
:	O
IF	O
...	O
ELSEIF	O
ENDIF	O
...	O
,	O
DO	O
...	O
ENDDO	O
,	O
FOR	O
...	O
ENDFOR	O
,	O
and	O
CASEOF	O
...	O
CASE	O
ENDCASE	O
...	O
statements	O
that	O
transliterated	O
into	O
pure-FORTRAN	O
.	O
</s>
<s>
IFTRAN	B-Language
was	O
bootstrapped	O
through	O
multiple	O
stages	O
from	O
a	O
hand-build	O
parser	O
that	O
added	O
IFTRAN	B-Language
language	O
constructs	O
one	O
at	O
a	O
time	O
.	O
</s>
<s>
Eventually	O
the	O
IFTRAN	B-Language
preprocessor	O
was	O
converted	O
entirely	O
into	O
IFTRAN	B-Language
and	O
a	O
pure-FORTRAN	O
version	O
of	O
IFTRAN	B-Language
pre-processing	O
its	O
own	O
code	O
was	O
used	O
to	O
transfer	O
the	O
tool	O
to	O
other	O
computers	O
.	O
</s>
<s>
A	O
pretty-printing	O
capability	O
provided	O
automatically	O
indented	O
source	O
program	O
listings	O
as	O
an	O
output	O
of	O
the	O
IFTRAN	B-Language
pre-processor	O
in	O
addition	O
to	O
the	O
pure-FORTRAN	O
code	O
that	O
was	O
sent	O
to	O
the	O
underlying	O
FORTRAN	B-Application
compiler	O
.	O
</s>
<s>
According	O
to	O
the	O
instruction	O
manual	O
for	O
IFTRAN	B-Language
,	O
a	O
General	O
Research	O
report	O
suggest	O
this	O
rationale	O
for	O
the	O
use	O
of	O
a	O
FORTRAN	B-Application
pre-processor	O
:	O
</s>
<s>
"	O
While	O
the	O
newer	O
structured	O
languages	O
such	O
as	O
PASCAL	B-Application
are	O
enjoying	O
an	O
unusual	O
popularity	O
,	O
particularly	O
in	O
educational	O
institutions	O
,	O
the	O
workhorse	O
language	O
of	O
scientists	O
and	O
engineers	O
is	O
still	O
FORTRAN	B-Application
.	O
</s>
<s>
FORTRAN	B-Application
can	O
be	O
argued	O
for	O
as	O
the	O
only	O
truly	O
transportable	O
language	O
;	O
when	O
going	O
from	O
site	O
to	O
site	O
,	O
FORTRAN	B-Application
is	O
always	O
expected	O
to	O
be	O
available	O
.	O
</s>
<s>
Since	O
this	O
is	O
not	O
true	O
of	O
ALGOL	B-Language
,	O
PASCAL	B-Application
,	O
ADA	O
or	O
other	O
structured	O
languages	O
,	O
there	O
is	O
a	O
good	O
motivation	O
for	O
users	O
and	O
authors	O
of	O
code	O
which	O
may	O
be	O
transported	O
to	O
write	O
in	O
FORTRAN.	O
"	O
</s>
