<s>
TI-BASIC	B-Language
is	O
the	O
official	O
name	O
of	O
a	O
BASIC-like	O
language	O
built	O
into	O
Texas	O
Instruments	O
(	O
TI	O
)	O
'	O
s	O
graphing	B-Application
calculators	I-Application
.	O
</s>
<s>
TI-BASIC	B-Language
is	O
a	O
language	O
family	O
of	O
three	O
different	O
and	O
incompatible	O
versions	O
,	O
released	O
on	O
different	O
products	O
:	O
</s>
<s>
TI	O
rarely	O
refers	O
to	O
the	O
language	O
by	O
name	O
,	O
but	O
the	O
name	O
TI-BASIC	B-Language
has	O
been	O
used	O
in	O
some	O
developer	O
documentation	O
.	O
</s>
<s>
For	O
many	O
applications	O
,	O
it	O
is	O
the	O
most	O
convenient	O
way	O
to	O
program	B-General_Concept
any	O
TI	O
calculator	O
,	O
since	O
the	O
capability	O
to	O
write	O
programs	O
in	O
TI-BASIC	B-Language
is	O
built-in	O
.	O
</s>
<s>
Assembly	B-Language
language	I-Language
(	O
often	O
referred	O
to	O
as	O
"	O
asm	O
"	O
)	O
can	O
also	O
be	O
used	O
,	O
and	O
C	B-Language
compilers	B-Language
exist	O
for	O
translation	O
into	O
assembly	O
:	O
TIGCC	B-Language
for	O
Motorola	B-Device
68000	I-Device
(	O
68k	B-Device
)	O
based	O
calculators	O
,	O
and	O
SDCC	B-Application
for	O
Zilog	B-General_Concept
Z80	I-General_Concept
based	O
calculators	O
.	O
</s>
<s>
However	O
,	O
both	O
of	O
them	O
are	O
cross-compilers	B-Application
,	O
not	O
allowing	O
on-calculator	O
programming	O
.	O
</s>
<s>
TI-BASIC	B-Language
is	O
considerably	O
slower	O
than	O
the	O
assembly	B-Language
language	I-Language
(	O
because	O
it	O
has	O
to	O
be	O
interpreted	B-Language
)	O
,	O
making	O
it	O
better	O
suited	O
to	O
writing	O
programs	O
to	O
quickly	O
solve	O
math	O
problems	O
or	O
perform	O
repetitive	O
tasks	O
,	O
rather	O
than	O
programming	O
games	O
or	O
graphics-intensive	O
applications	O
.	O
</s>
<s>
Some	O
math	O
instruction	O
books	O
even	O
provide	O
programs	O
in	O
TI-BASIC	B-Language
(	O
usually	O
for	O
the	O
widespread	O
variant	O
used	O
by	O
the	O
TI-82/83/84	O
series	O
)	O
.	O
</s>
<s>
Although	O
it	O
is	O
somewhat	O
minimalist	O
compared	O
to	O
programming	O
languages	O
used	O
on	O
computers	O
,	O
TI-BASIC	B-Language
is	O
nonetheless	O
an	O
important	O
factor	O
in	O
the	O
programming	O
community	O
.	O
</s>
<s>
Because	O
TI	O
graphing	B-Application
calculators	I-Application
are	O
required	O
for	O
advanced	O
mathematics	O
classes	O
in	O
many	O
high	O
schools	O
and	O
universities	O
,	O
TI-BASIC	B-Language
often	O
provides	O
the	O
first	O
glimpse	O
many	O
students	O
have	O
into	O
the	O
world	O
of	O
programming	O
.	O
</s>
<s>
The	O
syntax	O
of	O
all	O
versions	O
of	O
TI-BASIC	B-Language
are	O
somewhat	O
different	O
from	O
typical	O
BASIC	O
implementations	O
.	O
</s>
<s>
The	O
language	O
itself	O
has	O
some	O
basic	O
structured	B-Language
programming	I-Language
capabilities	O
,	O
but	O
makes	O
limited	O
to	O
no	O
use	O
of	O
or	O
allowance	O
for	O
white	O
space	O
or	O
indentation	O
.	O
</s>
<s>
On	O
the	O
TI-83/84	O
models	O
,	O
closing	O
parentheses	O
,	O
brackets	O
,	O
braces	O
,	O
and	O
quotes	O
can	O
optionally	O
be	O
omitted	O
at	O
the	O
end	O
of	O
a	O
line	O
or	O
before	O
the	O
STO	O
token	O
in	O
order	O
to	O
save	O
space	O
,	O
although	O
sometimes	O
they	O
are	O
better	O
left	O
on	O
.	O
</s>
<s>
For	O
example	O
,	O
on	O
TI	O
83/84	O
models	O
the	O
for	B-Language
loop	I-Language
function	O
runs	O
much	O
slower	O
without	O
closing	O
parentheses	O
in	O
certain	O
circumstances	O
.	O
</s>
<s>
The	O
syntax	O
for	O
assignment	O
(	O
copying	O
of	O
data	O
into	O
a	O
variable	O
)	O
is	O
unusual	O
with	O
respect	O
to	O
most	O
conventional	O
programming	O
languages	O
for	O
computers	O
;	O
rather	O
than	O
using	O
a	O
BASIC-like	O
let	O
statement	O
with	O
an	O
equal	O
sign	O
,	O
or	O
an	O
algol-like	B-Language
:=	O
operator	O
,	O
TI-BASIC	B-Language
uses	O
a	O
right-arrow	O
sto	O
→	O
operator	O
with	O
the	O
syntax	O
:	O
source	O
→	O
destination	O
.	O
</s>
<s>
Control	O
flow	O
statements	O
include	O
if-then-else	B-Language
blocks	I-Language
,	O
for	B-Language
loops	I-Language
,	O
while	O
loops	O
,	O
and	O
repeat	O
loops	O
,	O
though	O
no	O
switch	O
statements	O
.	O
</s>
<s>
Unusual	O
for	O
a	O
high	O
level	O
language	O
,	O
TI-BASIC	B-Language
implementations	O
include	O
IS>	O
(	O
Increment	O
and	O
Skip	O
if	O
Greater	O
Than	O
)	O
and	O
DS	O
<	O
(	O
Decrement	O
and	O
Skip	O
if	O
Less	O
Than	O
)	O
statements	O
,	O
constructs	O
generally	O
associated	O
with	O
assembly	B-Language
languages	I-Language
.	O
</s>
<s>
</s>
<s>
Availability	O
of	O
functions	O
and	O
subroutines	O
depends	O
on	O
the	O
implementation	O
;	O
the	O
versions	O
available	O
on	O
the	O
TI-82-descended	O
calculators	O
do	O
not	O
even	O
support	O
a	O
GOSUB-like	O
function	O
,	O
though	O
it	O
is	O
possible	O
to	O
call	O
programs	O
from	O
within	O
each	O
other	O
and	O
share	O
variables	O
between	O
programs	O
.	O
</s>
<s>
TI-89/92	O
-based	O
designs	O
can	O
have	O
access	O
to	O
shared	O
functions	O
,	O
essentially	O
programs	O
capable	O
of	O
returning	O
a	O
value	O
.	O
</s>
<s>
TI-BASIC	B-Language
is	O
a	O
strongly	O
and	O
dynamically	O
typed	O
language	O
.	O
</s>
<s>
Available	O
data	O
types	O
differ	O
considerably	O
between	O
the	O
68k	B-Device
and	O
Z80	B-General_Concept
versions	O
.	O
</s>
<s>
These	O
allow	O
real	O
numbers	O
or	O
complex	O
numbers	O
(	O
implemented	O
as	O
pairs	O
of	O
reals	O
)	O
to	O
be	O
stored	O
in	O
floating	B-Algorithm
point	I-Algorithm
format	I-Algorithm
.	O
</s>
<s>
The	O
limit	O
of	O
27	O
variables	O
,	O
however	O
,	O
may	O
be	O
expanded	O
through	O
the	O
use	O
of	O
lists	O
,	O
matrices	B-Architecture
,	O
and	O
manipulation	O
of	O
integer	O
notation	O
.	O
</s>
<s>
These	O
may	O
store	O
any	O
number	O
of	O
characters	O
or	O
even	O
function	O
names	O
,	O
as	O
long	O
as	O
there	O
is	O
available	O
memory	B-Architecture
.	O
</s>
<s>
These	O
are	O
essentially	O
one-dimensional	O
arrays	O
used	O
to	O
store	O
a	O
real	O
or	O
complex	O
number	O
into	O
each	O
of	O
their	O
elements	B-Data_Structure
.	O
</s>
<s>
The	O
dimension	O
of	O
a	O
list	O
,	O
its	O
number	O
of	O
elements	B-Data_Structure
,	O
may	O
range	O
from	O
1	O
to	O
999	O
,	O
although	O
available	O
memory	B-Architecture
may	O
be	O
a	O
limiting	O
factor	O
.	O
</s>
<s>
When	O
a	O
list	O
's	O
dimension	O
is	O
set	O
lower	O
than	O
it	O
had	O
been	O
,	O
elements	B-Data_Structure
at	O
the	O
end	O
are	O
cut	O
off	O
.	O
</s>
<s>
When	O
set	O
higher	O
,	O
extra	O
elements	B-Data_Structure
at	O
the	O
end	O
are	O
filled	O
with	O
zeros	O
.	O
</s>
<s>
Individual	O
elements	B-Data_Structure
of	O
lists	O
can	O
be	O
accessed	O
by	O
placing	O
the	O
element	O
number	O
in	O
parentheses	O
after	O
the	O
list	O
name	O
.	O
</s>
<s>
Matrices	B-Architecture
,	O
including	O
 [ A ] 	O
-	O
 [ J ] 	O
.	O
</s>
<s>
Their	O
elements	B-Data_Structure
are	O
subject	O
to	O
the	O
same	O
restrictions	O
as	O
lists	O
.	O
</s>
<s>
Their	O
dimensions	O
may	O
be	O
defined	O
up	O
to	O
99x99	O
elements	B-Data_Structure
,	O
although	O
,	O
again	O
,	O
available	O
memory	B-Architecture
will	O
limit	O
this	O
.	O
</s>
<s>
It	O
is	O
not	O
possible	O
to	O
create	O
user-defined	O
matrices	B-Architecture
,	O
so	O
only	O
the	O
ten	O
built	O
in	O
ones	O
may	O
be	O
utilized	O
.	O
</s>
<s>
They	O
are	O
evaluated	O
to	O
return	O
a	O
value	O
when	O
used	O
in	O
an	O
expression	O
or	O
program	B-General_Concept
.	O
</s>
<s>
Specific	O
values	O
,	O
(	O
constant	O
,	O
C	B-Language
)	O
can	O
be	O
plugged	O
in	O
for	O
the	O
independent	O
variable	O
(	O
X	O
)	O
by	O
following	O
the	O
equation	O
name	O
(	O
dependent	O
,	O
Y	O
)	O
by	O
the	O
constant	O
value	O
in	O
parentheses	O
.	O
</s>
<s>
The	O
68k	B-Device
calculators	O
can	O
store	O
very	O
large	O
numbers	O
,	O
as	O
high	O
as	O
,	O
with	O
perfect	O
accuracy	O
.	O
</s>
<s>
Real	O
numbers	O
,	O
using	O
decimal	O
floating	B-Algorithm
point	I-Algorithm
.	O
</s>
<s>
Lists	O
,	O
which	O
are	O
one-dimensional	O
linked	B-Data_Structure
lists	I-Data_Structure
which	O
support	O
element-wise	O
operations	O
.	O
</s>
<s>
On	O
the	O
68k	B-Device
calculators	O
,	O
elements	B-Data_Structure
can	O
be	O
integers	O
,	O
reals	O
,	O
complex	O
numbers	O
,	O
strings	O
or	O
expressions	O
.	O
</s>
<s>
Symbolic	B-Algorithm
expressions	I-Algorithm
,	O
unique	O
to	O
the	O
68k	B-Device
series	O
.	O
</s>
<s>
For	O
example	O
,	O
on	O
the	O
TI-84	B-Device
Plus	I-Device
,	O
all	O
English	O
language	O
letters	O
as	O
well	O
as	O
theta	O
( Θ	O
)	O
are	O
available	O
.	O
</s>
<s>
On	O
the	O
TI-83/84	O
,	O
the	O
programmer	O
can	O
create	O
lists	O
whose	O
names	O
are	O
up	O
to	O
five	O
characters	O
.	O
</s>
<s>
All	O
other	O
data	O
types	O
are	O
limited	O
,	O
such	O
as	O
the	O
27	O
real	O
or	O
complex	O
variables	O
,	O
and	O
a	O
number	O
of	O
predefined	O
variable	O
names	O
of	O
other	O
types	O
(	O
e.g.	O
,	O
matrices	B-Architecture
have	O
to	O
be	O
one	O
of	O
the	O
ten	O
variables	O
 [ A ] - [ J ] 	O
)	O
.	O
</s>
<s>
On	O
the	O
TI-83/84	O
certain	O
variables	O
such	O
as	O
Ans	O
and	O
the	O
finance	O
variables	O
have	O
fixed	O
addresses	O
in	O
RAM	B-Architecture
,	O
making	O
them	O
much	O
faster	O
to	O
access	O
than	O
the	O
27	O
letter	O
variables	O
.	O
</s>
<s>
In	O
contrast	O
,	O
68k	B-Device
calculators	O
allow	O
all	O
variable	O
names	O
to	O
have	O
up	O
to	O
eight	O
alphanumeric	O
characters	O
,	O
including	O
Greek	O
.	O
</s>
<s>
Furthermore	O
,	O
variables	O
can	O
be	O
grouped	O
into	O
"	O
folders	O
"	O
,	O
or	O
made	O
local	O
to	O
a	O
program	B-General_Concept
by	O
declaring	O
them	O
with	O
the	O
Local	O
statement	O
.	O
</s>
<s>
Z80	B-General_Concept
programmers	O
often	O
start	O
lines	O
with	O
"	O
(	O
double	O
quotation	O
mark	O
)	O
to	O
denote	O
a	O
comment	O
.	O
</s>
<s>
The	O
68k	B-Device
calculators	O
allow	O
programs	O
to	O
include	O
single-line	O
comments	O
,	O
using	O
©	O
as	O
a	O
comment	O
symbol	O
.	O
</s>
<s>
If	O
a	O
comment	O
appears	O
as	O
the	O
first	O
line	O
after	O
the	O
"	O
Prgm	O
"	O
statement	O
,	O
it	O
is	O
displayed	O
in	O
the	O
status	O
bar	O
when	O
the	O
program	B-General_Concept
is	O
selected	O
in	O
the	O
catalog	O
;	O
such	O
comments	O
are	O
often	O
used	O
to	O
document	O
the	O
names	O
or	O
types	O
of	O
parameters	O
.	O
</s>
<s>
The	O
68k	B-Device
interpreter	O
has	O
a	O
built	O
in	O
feature	O
to	O
store	O
the	O
number	O
of	O
space	O
characters	O
at	O
the	O
beginning	O
of	O
a	O
line	O
,	O
this	O
allows	O
indentation	O
.	O
</s>
<s>
The	O
Z80	B-General_Concept
version	O
of	O
TI-BASIC	B-Language
makes	O
explicit	O
"	O
functions	O
"	O
like	O
those	O
in	O
68k	B-Device
impossible	O
.	O
</s>
<s>
However	O
,	O
all	O
variables	O
are	O
global	O
so	O
functions	O
can	O
be	O
emulated	O
by	O
setting	O
variables	O
,	O
similar	O
to	O
arguments	O
,	O
before	O
calling	O
another	O
program	B-General_Concept
.	O
</s>
<s>
Return	O
values	O
do	O
not	O
exist	O
;	O
the	O
Return	O
statement	O
stops	O
the	O
current	O
program	B-General_Concept
and	O
continues	O
where	O
the	O
program	B-General_Concept
was	O
called	O
.	O
</s>
<s>
The	O
68k	B-Device
version	O
of	O
TI-BASIC	B-Language
allows	O
creating	O
user-defined	O
functions	O
.	O
</s>
<s>
However	O
,	O
functions	O
can	O
still	O
be	O
non-pure	O
because	O
they	O
can	O
call	O
built-in	O
functions	O
such	O
as	O
getTime( )	O
,	O
getKey( )	O
,	O
or	O
rand( )	O
.	O
</s>
<s>
Third-party	O
applications	O
,	O
in	O
chronological	O
order	O
Omnicalc	O
,	O
xLIB	O
,	O
Celtic	O
,	O
and	O
Doors	O
CS	B-Language
,	O
have	O
overloaded	O
TI-BASIC	B-Language
functions	O
on	O
the	O
Z80	B-General_Concept
calculators	O
to	O
provide	O
additional	O
language	O
functionality	O
.	O
</s>
<s>
The	O
third-party	O
libraries	O
overload	O
the	O
sum( )	O
,	O
real( )	O
,	O
det( )	O
and	O
identity( )	O
functions	O
,	O
which	O
are	O
handled	O
and	O
interpreted	B-Language
by	O
their	O
respective	O
applications	O
.	O
</s>
<s>
Among	O
the	O
extra	O
functions	O
are	O
fast	O
shape-drawing	O
routines	O
,	O
sprite	O
and	O
tilemap	O
tools	O
,	O
program	B-General_Concept
and	O
VAT	O
modification	O
and	O
access	O
abilities	O
,	O
GUI	O
construction	O
features	O
,	O
and	O
much	O
more	O
,	O
most	O
of	O
which	O
are	O
ordinarily	O
restricted	O
to	O
use	O
by	O
assembly	O
programmers	O
.	O
</s>
<s>
this	O
code	O
can	O
be	O
shortened	O
down	O
to	O
just	O
the	O
Disp	O
function	O
,	O
like	O
in	O
the	O
TI-83/84	O
,	O
and	O
the	O
hellowld	O
,	O
prgm	O
,	O
and	O
endprgm	O
are	O
auto-generated	O
.	O
)	O
</s>
<s>
Lists	O
can	O
be	O
used	O
by	O
the	O
numerous	O
built-in	O
TI-BASIC	B-Language
functions	O
for	O
calculating	O
statistics	O
,	O
including	O
various	O
regression	O
analyses	O
and	O
.	O
</s>
<s>
A	O
program	B-General_Concept
can	O
be	O
called	O
from	O
within	O
itself	O
or	O
from	O
within	O
another	O
program	B-General_Concept
.	O
</s>
<s>
The	O
68k	B-Device
series	O
makes	O
a	O
distinction	O
between	O
programs	O
and	O
functions	O
.	O
</s>
<s>
The	O
growth	O
of	O
the	O
hobbyist	O
graphing	B-Application
calculator	I-Application
community	O
in	O
the	O
1990s	O
brought	O
with	O
it	O
sharing	O
and	O
collaboration	O
,	O
including	O
the	O
need	O
to	O
share	O
TI-BASIC	B-Language
code	O
on	O
mailing	O
lists	O
and	O
discussion	O
forums	O
.	O
</s>
<s>
At	O
first	O
,	O
this	O
was	O
done	O
by	O
typing	O
out	O
the	O
TI-BASIC	B-Language
code	O
from	O
a	O
calculator	O
screen	O
into	O
a	O
computer	O
by	O
hand	O
,	O
or	O
conversely	O
,	O
entering	O
programs	O
manually	O
into	O
calculators	O
.	O
</s>
<s>
TI-BASIC	B-Language
programs	O
are	O
stored	O
in	O
a	O
tokenized	O
format	O
,	O
they	O
cannot	O
be	O
edited	O
using	O
standard	O
computer	O
text	O
editors	O
,	O
so	O
as	O
the	O
calculator	B-Application
programming	I-Application
community	O
matured	O
,	O
a	O
need	O
for	O
an	O
automated	O
converter	O
arose	O
.	O
</s>
<s>
The	O
format	O
for	O
computer-stored	O
TI-BASIC	B-Language
programs	O
generated	O
by	O
Texas	O
Instruments	O
 '	O
TI-GraphLink	O
application	O
was	O
eventually	O
decoded	O
,	O
and	O
third-party	O
tools	O
were	O
created	O
to	O
manipulate	O
these	O
files	O
.	O
</s>
<s>
TI	O
created	O
a	O
BASIC	O
editor	O
that	O
they	O
included	O
in	O
certain	O
releases	O
of	O
the	O
TI-GraphLink	O
linking	O
program	B-General_Concept
,	O
but	O
it	O
has	O
not	O
gained	O
widespread	O
usage	O
.	O
</s>
<s>
The	O
project	O
soon	O
expanded	O
to	O
include	O
a	O
regex-based	O
TI-BASIC	B-Language
optimizer	O
.	O
</s>
<s>
Independently	O
,	O
Christopher	O
"	O
Kerm	O
Martian	O
"	O
Mitchell	O
of	O
Cemetech	O
began	O
creating	O
an	O
online	O
converter	O
to	O
extract	O
plain-text	O
(	O
and	O
later	O
HTML	O
and	O
BBCode-formatted	O
)	O
contents	O
from	O
tokenized	O
TI-BASIC	B-Language
programs	O
,	O
which	O
expanded	O
to	O
include	O
an	O
online	O
program	B-General_Concept
editor	O
,	O
exporter	O
,	O
and	O
TI-83	B-Device
Plus	I-Device
emulator	O
.	O
</s>
<s>
The	O
only	O
other	O
major	O
TI-BASIC	B-Language
editor	O
currently	O
in	O
use	O
is	O
TokenIDE	O
(	O
or	O
"	O
Tokens	O
"	O
)	O
,	O
created	O
by	O
Shaun	O
"	O
Merthsoft	O
"	O
McFall	O
.	O
</s>
<s>
An	O
offline	O
editor	O
,	O
Tokens	O
can	O
import	O
,	O
edit	O
,	O
and	O
export	O
TI-BASIC	B-Language
programs	O
,	O
includes	O
tools	O
to	O
track	O
program	B-General_Concept
size	O
and	O
correctness	O
,	O
and	O
offers	O
ancillary	O
features	O
such	O
as	O
a	O
sprite/image	O
editor	O
.	O
</s>
<s>
Built	O
around	O
token	O
definitions	O
stored	O
in	O
XML	B-Protocol
files	O
,	O
it	O
is	O
intended	O
to	O
be	O
extensible	O
to	O
work	O
with	O
any	O
user-specified	O
token	O
mapping	O
.	O
</s>
<s>
Programmes	O
on	O
the	O
NSprire	O
series	O
as	O
well	O
as	O
TI	B-Device
92	I-Device
plus	O
and	O
Voyage	O
200	O
calculators	O
can	O
be	O
transferred	O
and	O
saved	O
in	O
flat	O
clear	O
text	O
(	O
Ansi/Ascii/ISO	O
8859-*	O
)	O
format	O
and	O
there	O
are	O
several	O
IDEs	O
for	O
TI	O
calculator	B-Application
programming	I-Application
.	O
</s>
<s>
A	O
series	O
of	O
TextPad	B-Application
syntax	O
definitions	O
,	O
code	O
snippets	O
,	O
and	O
charts	O
are	O
available	O
for	O
the	O
TI	O
calculators	O
,	O
and	O
the	O
syntax	O
definitions	O
have	O
also	O
been	O
converted	O
to	O
the	O
format	O
used	O
by	O
the	O
Zeus	O
editor	O
.	O
</s>
<s>
An	O
independent	O
project	O
exists	O
for	O
developing	O
a	O
PC-side	O
interpreter	O
for	O
the	O
TI89-92-Voyage	O
200	O
variant	O
of	O
TI	B-Language
Basic	I-Language
that	O
would	O
allow	O
programmes	O
for	O
the	O
calculator	O
to	O
be	O
run	O
directly	O
as	O
well	O
as	O
combined	O
programmes	O
of	O
other	O
languages	O
which	O
call	O
this	O
interpreter	O
.	O
</s>
<s>
The	O
interpreter	O
uses	O
standard	O
input	O
,	O
output	O
,	O
error	O
and	O
specifiable	O
log	O
and	O
configuration	O
files	O
in	O
console	O
mode	O
under	O
Windows	O
,	O
and	O
a	O
second	O
programme	O
to	O
replicate	O
the	O
graphics	O
used	O
on	O
the	O
calculator	O
would	O
be	O
related	O
to	O
it	O
in	O
the	O
same	O
way	O
as	O
the	O
Tk	O
tools	O
which	O
are	O
integrated	O
with	O
Tcl	B-Operating_System
,	O
Perl	B-Language
,	O
Rexx	B-Language
,	O
C	B-Language
and	O
other	O
languages	O
.	O
</s>
<s>
A	O
third	O
tool	O
which	O
integrates	O
the	O
PC-side	O
TI	B-Language
Basic	I-Language
with	O
spreadsheet	O
and	O
database	O
programmes	O
via	O
VBA	O
and	O
WSH	O
engines	O
is	O
also	O
envisioned	O
.	O
</s>
<s>
This	O
project	O
also	O
involves	O
a	O
calculator-side	O
Unix-style	O
shell	O
and	O
Rexx	B-Language
and	O
Perl	B-Language
interpreters	I-Language
,	O
a	O
Fortran	O
77	O
interpreter	O
,	O
as	O
well	O
as	O
converters	O
to	O
go	O
back	O
and	O
forth	O
amongst	O
the	O
various	O
Casio	O
,	O
HP	O
,	O
Sharp	O
,	O
and	O
Texas	O
Instruments	O
calculator	B-Application
programming	I-Application
languages	O
and	O
to	O
and	O
from	O
those	O
and	O
various	O
scripting	B-Language
languages	I-Language
.	O
</s>
