<s>
TACPOL	B-Language
(	O
Tactical	O
Procedure	O
Oriented	O
Language	O
)	O
is	O
a	O
block	O
structured	O
programming	O
language	O
developed	O
by	O
the	O
United	O
States	O
Army	O
for	O
the	O
TACFIRE	B-Device
Tactical	O
Fire	O
Direction	O
command	O
and	O
control	O
application	O
.	O
</s>
<s>
TACPOL	B-Language
is	O
similar	O
to	O
PL/I	B-Language
.	O
</s>
<s>
Unlike	O
PL/I	B-Language
,	O
TACPOL	B-Language
keywords	O
—	O
called	O
particles	O
—	O
are	O
reserved	O
words	O
and	O
cannot	O
be	O
used	O
as	O
identifiers	O
.	O
</s>
<s>
TACPOL	B-Language
identifiers	O
can	O
be	O
any	O
length	O
,	O
but	O
if	O
longer	O
than	O
eight	O
characters	O
only	O
the	O
first	O
five	O
concatenated	O
with	O
the	O
last	O
three	O
characters	O
were	O
actually	O
used	O
.	O
</s>
<s>
TACPOL	B-Language
supports	O
fixed-point	O
binary	O
numeric	O
data	O
,	O
fixed-length	O
character	O
strings	O
up	O
to	O
512	O
bytes	O
,	O
and	O
fixed-length	O
bit	O
strings	O
up	O
to	O
32	O
bits	O
.	O
</s>
<s>
The	O
TACPOL	B-Language
compiler	O
ran	O
on	O
and	O
generated	O
code	O
for	O
the	O
AN/GYK	B-Device
-12	I-Device
,	O
a	O
militarized	O
version	O
of	O
the	O
Litton	O
Industries	O
L-3050	O
32-bit	O
minicomputer	O
.	O
</s>
<s>
TACPOL	B-Language
is	O
easy	O
to	O
learn	O
.	O
</s>
<s>
"	O
TACPOL	B-Language
has	O
a	O
large	O
number	O
of	O
special	O
language	O
features	O
which	O
were	O
included	O
for	O
reasons	O
of	O
efficiency	O
because	O
the	O
inclusion	O
of	O
corresponding	O
cleanly	O
designed	O
general	O
purpose	O
features	O
was	O
not	O
properly	O
understood.	O
"	O
</s>
<s>
"	O
Cost	O
per	O
instruction	O
of	O
TACPOL	B-Language
 [ is ] 	O
higher	O
than	O
language	O
used	O
for	O
other	O
military	O
computers.	O
"	O
</s>
