<s>
Hollerith	B-Language
constants	I-Language
,	O
named	O
in	O
honor	O
of	O
Herman	O
Hollerith	O
,	O
were	O
used	O
in	O
early	O
FORTRAN	B-Application
programs	O
to	O
allow	O
manipulation	O
of	O
character	O
data	O
.	O
</s>
<s>
Early	O
FORTRAN	B-Application
had	O
no	O
CHARACTER	O
data	O
type	O
,	O
only	O
numeric	O
types	O
.	O
</s>
<s>
In	O
order	O
to	O
perform	O
character	O
manipulation	O
,	O
characters	O
needed	O
to	O
be	O
placed	O
into	O
numeric	O
variables	O
using	O
Hollerith	B-Language
constants	I-Language
.	O
</s>
<s>
By	O
the	O
FORTRAN	B-Application
66	O
Standard	O
,	O
Hollerith	O
syntax	O
was	O
allowed	O
in	O
the	O
following	O
uses	O
:	O
</s>
<s>
Portability	O
was	O
problematic	O
with	O
Hollerith	B-Language
constants	I-Language
.	O
</s>
<s>
One	O
of	O
the	O
major	O
features	O
of	O
FORTRAN	B-Application
77	O
was	O
the	O
CHARACTER	O
string	O
data	O
type	O
.	O
</s>
<s>
Use	O
of	O
this	O
data	O
type	O
dramatically	O
simplified	O
character	O
manipulation	O
in	O
Fortran	B-Application
programs	O
rendering	O
almost	O
all	O
uses	O
of	O
the	O
Hollerith	B-Language
constant	I-Language
technique	O
obsolete	O
.	O
</s>
<s>
Hollerith	B-Language
constants	I-Language
were	O
removed	O
from	O
the	O
FORTRAN	B-Application
77	O
Standard	O
,	O
though	O
still	O
described	O
in	O
an	O
appendix	O
for	O
those	O
wishing	O
to	O
continue	O
support	O
.	O
</s>
<s>
Hollerith	O
edit	O
descriptors	O
were	O
allowed	O
through	O
Fortran	B-Application
90	O
,	O
and	O
were	O
removed	O
from	O
the	O
Fortran	B-Application
95	O
Standard	O
.	O
</s>
<s>
The	O
following	O
is	O
a	O
FORTRAN	B-Application
66	O
hello	O
world	O
program	O
using	O
Hollerith	B-Language
constants	I-Language
.	O
</s>
<s>
Besides	O
DATA	O
statements	O
,	O
Hollerith	B-Language
constants	I-Language
were	O
also	O
allowed	O
as	O
actual	O
arguments	O
in	O
subroutine	O
calls	O
.	O
</s>
<s>
Although	O
technically	O
not	O
a	O
Hollerith	B-Language
constant	I-Language
,	O
the	O
same	O
Hollerith	O
syntax	O
was	O
allowed	O
as	O
an	O
edit	O
descriptor	O
in	O
FORMAT	O
statements	O
.	O
</s>
