<s>
ALGOL	B-Language
(	O
;	O
short	O
for	O
"	O
Algorithmic	B-Language
Language	I-Language
"	O
)	O
is	O
a	O
family	O
of	O
imperative	B-Application
computer	O
programming	O
languages	O
originally	O
developed	O
in	O
1958	O
.	O
</s>
<s>
ALGOL	B-Language
heavily	O
influenced	O
many	O
other	O
languages	O
and	O
was	O
the	O
standard	O
method	O
for	O
algorithm	O
description	O
used	O
by	O
the	O
Association	O
for	O
Computing	O
Machinery	O
(	O
ACM	O
)	O
in	O
textbooks	O
and	O
academic	O
sources	O
for	O
more	O
than	O
thirty	O
years	O
.	O
</s>
<s>
In	O
the	O
sense	O
that	O
the	O
syntax	O
of	O
most	O
modern	O
languages	O
is	O
"	O
Algol-like	B-Language
"	O
,	O
it	O
was	O
arguably	O
more	O
influential	O
than	O
three	O
other	O
high-level	B-Language
programming	I-Language
languages	I-Language
among	O
which	O
it	O
was	O
roughly	O
contemporary	O
:	O
FORTRAN	B-Application
,	O
Lisp	B-Language
,	O
and	O
COBOL	B-Application
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
avoid	O
some	O
of	O
the	O
perceived	O
problems	O
with	O
FORTRAN	B-Application
and	O
eventually	O
gave	O
rise	O
to	O
many	O
other	O
programming	O
languages	O
,	O
including	O
PL/I	B-Language
,	O
Simula	B-Language
,	O
BCPL	B-Language
,	O
B	B-Language
,	O
Pascal	B-Application
,	O
and	O
C	B-Language
.	O
</s>
<s>
ALGOL	B-Language
introduced	O
code	O
blocks	O
and	O
the	O
begin	O
...	O
end	O
pairs	O
for	O
delimiting	O
them	O
.	O
</s>
<s>
It	O
was	O
also	O
the	O
first	O
language	O
implementing	O
nested	O
function	O
definitions	O
with	O
lexical	B-Language
scope	O
.	O
</s>
<s>
Moreover	O
,	O
it	O
was	O
the	O
first	O
programming	O
language	O
which	O
gave	O
detailed	O
attention	O
to	O
formal	O
language	O
definition	O
and	O
through	O
the	O
Algol	B-Language
60	I-Language
Report	O
introduced	O
Backus	O
–	O
Naur	O
form	O
,	O
a	O
principal	O
formal	O
grammar	O
notation	O
for	O
language	O
design	O
.	O
</s>
<s>
ALGOL	B-Language
58	I-Language
–	O
originally	O
proposed	O
to	O
be	O
called	O
IAL	B-Language
,	O
for	O
International	B-Language
Algebraic	I-Language
Language	I-Language
.	O
</s>
<s>
ALGOL	B-Language
60	I-Language
–	O
first	O
implemented	O
as	O
X1	O
ALGOL	B-Language
60	I-Language
in	O
1961	O
.	O
</s>
<s>
ALGOL	B-Language
68	I-Language
–	O
introduced	O
new	O
elements	O
including	O
flexible	O
arrays	O
,	O
slices	O
,	O
parallelism	O
,	O
operator	O
identification	O
.	O
</s>
<s>
ALGOL	B-Language
68	I-Language
is	O
substantially	O
different	O
from	O
ALGOL	B-Language
60	I-Language
and	O
was	O
not	O
well	O
received	O
,	O
so	O
in	O
general	O
"	O
Algol	B-Language
"	O
means	O
ALGOL	B-Language
60	I-Language
and	O
its	O
dialects	O
.	O
</s>
<s>
ALGOL	B-Language
was	O
developed	O
jointly	O
by	O
a	O
committee	O
of	O
European	O
and	O
American	O
computer	O
scientists	O
in	O
a	O
meeting	O
in	O
1958	O
at	O
the	O
Swiss	O
Federal	O
Institute	O
of	O
Technology	O
in	O
Zurich	O
(	O
cf	O
.	O
</s>
<s>
ALGOL	B-Language
58	I-Language
)	O
.	O
</s>
<s>
ALGOL	B-Language
was	O
used	O
mostly	O
by	O
research	O
computer	O
scientists	O
in	O
the	O
United	O
States	O
and	O
in	O
Europe	O
.	O
</s>
<s>
Its	O
use	O
in	O
commercial	O
applications	O
was	O
hindered	O
by	O
the	O
absence	O
of	O
standard	O
input/output	B-General_Concept
facilities	O
in	O
its	O
description	O
and	O
the	O
lack	O
of	O
interest	O
in	O
the	O
language	O
by	O
large	O
computer	O
vendors	O
other	O
than	O
Burroughs	O
Corporation	O
.	O
</s>
<s>
ALGOL	B-Language
60	I-Language
did	O
however	O
become	O
the	O
standard	O
for	O
the	O
publication	O
of	O
algorithms	O
and	O
had	O
a	O
profound	O
effect	O
on	O
future	O
language	O
development	O
.	O
</s>
<s>
John	O
Backus	O
developed	O
the	O
Backus	O
normal	O
form	O
method	O
of	O
describing	O
programming	O
languages	O
specifically	O
for	O
ALGOL	B-Language
58	I-Language
.	O
</s>
<s>
It	O
was	O
revised	O
and	O
expanded	O
by	O
Peter	O
Naur	O
for	O
ALGOL	B-Language
60	I-Language
,	O
and	O
at	O
Donald	O
Knuth	O
's	O
suggestion	O
renamed	O
Backus	O
–	O
Naur	O
form	O
.	O
</s>
<s>
Peter	O
Naur	O
:	O
"	O
As	O
editor	O
of	O
the	O
ALGOL	B-Language
Bulletin	O
I	O
was	O
drawn	O
into	O
the	O
international	O
discussions	O
of	O
the	O
language	O
and	O
was	O
selected	O
to	O
be	O
member	O
of	O
the	O
European	O
language	O
design	O
group	O
in	O
November	O
1959	O
.	O
</s>
<s>
In	O
this	O
capacity	O
I	O
was	O
the	O
editor	O
of	O
the	O
ALGOL	B-Language
60	I-Language
report	O
,	O
produced	O
as	O
the	O
result	O
of	O
the	O
ALGOL	B-Language
60	I-Language
meeting	O
in	O
Paris	O
in	O
January	O
1960.	O
"	O
</s>
<s>
ALGOL	B-Language
60	I-Language
inspired	O
many	O
languages	O
that	O
followed	O
it	O
.	O
</s>
<s>
The	O
Scheme	B-Language
programming	I-Language
language	I-Language
,	O
a	O
variant	O
of	O
Lisp	B-Language
that	O
adopted	O
the	O
block	O
structure	O
and	O
lexical	B-Language
scope	O
of	O
ALGOL	B-Language
,	O
also	O
adopted	O
the	O
wording	O
"	O
Revised	O
Report	O
on	O
the	O
Algorithmic	B-Language
Language	I-Language
Scheme	B-Language
"	O
for	O
its	O
standards	O
documents	O
in	O
homage	O
to	O
ALGOL	B-Language
.	O
</s>
<s>
As	O
Peter	O
Landin	O
noted	O
,	O
ALGOL	B-Language
was	O
the	O
first	O
language	O
to	O
combine	O
seamlessly	O
imperative	B-Application
effects	O
with	O
the	O
(	O
call-by-name	O
)	O
lambda	B-Language
calculus	I-Language
.	O
</s>
<s>
Perhaps	O
the	O
most	O
elegant	O
formulation	O
of	O
the	O
language	O
is	O
due	O
to	O
John	O
C	B-Language
.	O
Reynolds	O
,	O
and	O
it	O
best	O
exhibits	O
its	O
syntactic	O
and	O
semantic	O
purity	O
.	O
</s>
<s>
Reynolds	O
's	O
idealized	O
ALGOL	B-Language
also	O
made	O
a	O
convincing	O
methodologic	O
argument	O
regarding	O
the	O
suitability	O
of	O
local	O
effects	O
in	O
the	O
context	O
of	O
call-by-name	O
languages	O
,	O
in	O
contrast	O
with	O
the	O
global	O
effects	O
used	O
by	O
call-by-value	O
languages	O
such	O
as	O
ML	B-Language
.	O
</s>
<s>
The	O
conceptual	O
integrity	O
of	O
the	O
language	O
made	O
it	O
one	O
of	O
the	O
main	O
objects	O
of	O
semantic	O
research	O
,	O
along	O
with	O
Programming	B-Language
Computable	I-Language
Functions	I-Language
(	O
PCF	O
)	O
and	O
ML	B-Language
.	O
</s>
<s>
To	O
date	O
there	O
have	O
been	O
at	O
least	O
70	O
augmentations	O
,	O
extensions	O
,	O
derivations	O
and	O
sublanguages	O
of	O
Algol	B-Language
60	I-Language
.	O
</s>
<s>
NameYearAuthorCountryDescriptionTarget	O
CPU	O
ZMMD-implementation	O
1958	O
Friedrich	O
L	O
.	O
Bauer	O
,	O
Heinz	O
Rutishauser	O
,	O
Klaus	O
Samelson	O
,	O
Hermann	O
Bottenbruch	O
Germany	O
implementation	O
of	O
ALGOL	B-Language
58	I-Language
Z22	B-Device
(	O
later	O
Zuse	O
's	O
Z23	B-Device
was	O
delivered	O
with	O
an	O
Algol	B-Language
60	I-Language
compiler	B-Language
)	O
Computer	O
Museum	O
History	O
,	O
Historical	O
Zuse-Computer	O
Z23	B-Device
,	O
restored	O
by	O
the	O
Konrad	O
Zuse	O
Schule	O
in	O
Hünfeld	O
,	O
for	O
the	O
Computer	O
Museum	O
History	O
Center	O
in	O
Mountain	O
View	O
(	O
California	O
)	O
USAX1	O
ALGOL	B-Language
60	I-Language
August	O
1960	O
Edsger	O
W	O
.	O
Dijkstra	O
and	O
Jaap	O
A	O
.	O
Zonneveld	O
Netherlands	O
First	O
implementation	O
of	O
ALGOL	B-Language
60	I-Language
Electrologica	O
X1Elliott	O
ALGOL	B-Language
1960s	O
C	B-Language
.	O
A	O
.	O
R	O
.	O
Hoare	O
UK	O
Subject	O
of	O
the	O
1980	O
Turing	O
lecture	O
Elliott	B-Device
803	I-Device
,	O
Elliott	O
503	O
,	O
Elliott	O
4100	O
seriesJOVIAL	O
1960	O
Jules	O
Schwartz	O
USA	O
A	O
DOD	O
HOL	B-Language
prior	O
to	O
Ada	B-Language
Various	O
(	O
see	O
article	O
)	O
Burroughs	O
Algol	B-Language
(	O
Several	O
variants	O
)	O
1961	O
Burroughs	O
Corporation	O
(	O
with	O
participation	O
by	O
Hoare	O
,	O
Dijkstra	O
,	O
and	O
others	O
)	O
USA	O
Basis	O
of	O
the	O
Burroughs	O
(	O
and	O
now	O
Unisys	O
MCP	B-Application
based	O
)	O
computers	O
Burroughs	B-Device
Large	I-Device
Systems	I-Device
and	O
their	O
midrange	O
also.Case	O
ALGOL	B-Language
1961	O
Case	O
Institute	O
of	O
Technology	O
USA	O
Simula	B-Language
was	O
originally	O
contracted	O
as	O
a	O
simulation	O
extension	O
of	O
the	O
Case	O
ALGOL	B-Language
UNIVAC	O
1107GOGOL	O
1961	O
William	O
M	O
.	O
McKeeman	O
USA	O
For	O
ODIN	O
time-sharing	O
system	O
PDP-1RegneCentralen	O
ALGOL	B-Language
1961	O
Peter	O
Naur	O
,	O
Jørn	O
Jensen	O
Denmark	O
Implementation	O
of	O
full	O
Algol	B-Language
60	I-Language
DASK	O
at	O
RegnecentralenDartmouth	O
ALGOL	B-Language
30	O
1962	O
Thomas	O
Eugene	O
Kurtz	O
et	O
al	O
.	O
</s>
<s>
USA	O
LGP-30USS	O
90	O
Algol	B-Language
1962	O
L	O
.	O
Petrone	O
Italy	O
Algol	B-Language
Translator	O
1962	O
G	O
.	O
van	O
der	O
Mey	O
and	O
W.L.	O
</s>
<s>
van	O
der	O
Poel	O
Netherlands	O
Staatsbedrijf	O
der	O
Posterijen	O
,	O
Telegrafie	O
en	O
Telefonie	O
ZEBRAKidsgrove	O
Algol	B-Language
1963	O
F	O
.	O
G	O
.	O
Duncan	O
UK	O
English	O
Electric	O
Company	O
KDF9VALGOL	O
1963	O
Val	O
Schorre	O
USA	O
A	O
test	O
of	O
the	O
META	B-Application
II	I-Application
compiler	B-Language
compilerWhetstone	O
1964	O
Brian	O
Randell	O
and	O
L	O
.	O
J	O
.	O
Russell	O
UK	O
Atomic	O
Power	O
Division	O
of	O
English	O
Electric	O
Company	O
.	O
</s>
<s>
Precursor	O
to	O
Ferranti	B-Device
Pegasus	I-Device
,	O
National	O
Physical	O
Laboratories	O
ACE	B-Device
and	O
English	B-Device
Electric	I-Device
DEUCE	I-Device
implementations	O
.	O
</s>
<s>
English	O
Electric	O
Company	O
KDF9NU	O
ALGOL	B-Language
1965	O
Norway	O
UNIVACALGEK	O
1965	O
USSR	O
АЛГЭК	O
,	O
based	O
on	O
ALGOL-60	B-Language
and	O
COBOL	B-Application
support	O
,	O
for	O
economical	O
tasks	O
Minsk-22ALGOL	O
W	O
1966	O
Niklaus	O
Wirth	O
USA	O
Proposed	O
successor	O
to	O
ALGOL	B-Language
60	I-Language
IBM	O
System/360MALGOL	O
1966	O
publ	O
.	O
</s>
<s>
The	O
Burroughs	O
dialects	O
included	O
special	O
Bootstrapping	O
dialects	O
such	O
as	O
ESPOL	B-Language
and	O
NEWP	B-Language
.	O
</s>
<s>
The	O
latter	O
is	O
still	O
used	O
for	O
Unisys	O
MCP	B-Application
system	O
software	O
.	O
</s>
<s>
ALGOL	B-Language
60	I-Language
as	O
officially	O
defined	O
had	O
no	O
I/O	B-General_Concept
facilities	O
;	O
implementations	O
defined	O
their	O
own	O
in	O
ways	O
that	O
were	O
rarely	O
compatible	O
with	O
each	O
other	O
.	O
</s>
<s>
In	O
contrast	O
,	O
ALGOL	B-Language
68	I-Language
offered	O
an	O
extensive	O
library	O
of	O
transput	B-General_Concept
(	O
input/output	B-General_Concept
)	O
facilities	O
.	O
</s>
<s>
ALGOL	B-Language
60	I-Language
allowed	O
for	O
two	O
evaluation	B-Language
strategies	I-Language
for	O
parameter	O
passing	O
:	O
the	O
common	O
call-by-value	O
,	O
and	O
call-by-name	O
.	O
</s>
<s>
Call-by-name	O
is	O
known	O
by	O
many	O
compiler	B-Language
designers	O
for	O
the	O
interesting	O
"	O
thunks	B-Application
"	O
that	O
are	O
used	O
to	O
implement	O
it	O
.	O
</s>
<s>
Donald	O
Knuth	O
devised	O
the	O
"	O
man	B-Language
or	I-Language
boy	I-Language
test	I-Language
"	O
to	O
separate	O
compilers	B-Language
that	O
correctly	O
implemented	O
"	O
recursion	O
and	O
non-local	O
references.	O
"	O
</s>
<s>
ALGOL	B-Language
68	I-Language
was	O
defined	O
using	O
a	O
two-level	O
grammar	O
formalism	O
invented	O
by	O
Adriaan	O
van	O
Wijngaarden	O
and	O
which	O
bears	O
his	O
name	O
.	O
</s>
<s>
Van	B-Application
Wijngaarden	I-Application
grammars	I-Application
use	O
a	O
context-free	O
grammar	O
to	O
generate	O
an	O
infinite	O
set	O
of	O
productions	O
that	O
will	O
recognize	O
a	O
particular	O
ALGOL	B-Language
68	I-Language
program	O
;	O
notably	O
,	O
they	O
are	O
able	O
to	O
express	O
the	O
kind	O
of	O
requirements	O
that	O
in	O
many	O
other	O
programming	O
language	O
standards	O
are	O
labelled	O
"	O
semantics	O
"	O
and	O
have	O
to	O
be	O
expressed	O
in	O
ambiguity-prone	O
natural	O
language	O
prose	O
,	O
and	O
then	O
implemented	O
in	O
compilers	B-Language
as	O
ad	O
hoc	O
code	O
attached	O
to	O
the	O
formal	O
language	O
parser	O
.	O
</s>
<s>
This	O
is	O
known	O
as	O
stropping	B-Application
.	O
)	O
</s>
<s>
Here	O
is	O
an	O
example	O
of	O
how	O
to	O
produce	O
a	O
table	B-Application
using	O
Elliott	B-Device
803	I-Device
ALGOL	B-Language
.	O
</s>
<s>
The	O
following	O
code	O
samples	O
are	O
ALGOL	B-Language
68	I-Language
versions	O
of	O
the	O
above	O
ALGOL	B-Language
60	I-Language
code	O
samples	O
.	O
</s>
<s>
ALGOL	B-Language
68	I-Language
implementations	O
used	O
ALGOL	B-Language
60	I-Language
's	O
approaches	O
to	O
stropping	B-Application
.	O
</s>
<s>
In	O
ALGOL	B-Language
68	I-Language
's	O
case	O
tokens	O
with	O
the	O
bold	O
typeface	O
are	O
reserved	O
words	O
,	O
types	O
(	O
modes	O
)	O
or	O
operators	O
.	O
</s>
<s>
floating	O
point	O
algol68	B-Language
test	O
:	O
</s>
<s>
real	O
a	O
,	O
b	B-Language
,	O
c	B-Language
,	O
d	O
;	O
</s>
<s>
b	B-Language
:=	O
sin(a )	O
;	O
</s>
<s>
c	B-Language
:=	O
cos(a )	O
;	O
</s>
<s>
printf( ( $	O
z-d.6d	O
$	O
,	O
a	O
,	O
b	B-Language
,	O
c	B-Language
)	O
)	O
#	O
formats	O
output	O
with	O
1	O
digit	O
before	O
and	O
6	O
after	O
the	O
decimal	O
point	O
.	O
</s>
<s>
ALGOL	B-Language
58	I-Language
had	O
no	O
I/O	B-General_Concept
facilities	O
.	O
</s>
<s>
Since	O
ALGOL	B-Language
60	I-Language
had	O
no	O
I/O	B-General_Concept
facilities	O
,	O
there	O
is	O
no	O
portable	O
hello	O
world	O
program	O
in	O
ALGOL	B-Language
.	O
</s>
<s>
The	O
next	O
three	O
examples	O
are	O
in	O
Burroughs	O
Extended	O
Algol	B-Language
.	O
</s>
<s>
The	O
first	O
uses	O
a	O
character	O
array	O
,	O
similar	O
to	O
C	B-Language
.	O
The	O
language	O
allows	O
the	O
array	O
identifier	O
to	O
be	O
used	O
as	O
a	O
pointer	O
to	O
the	O
array	O
,	O
and	O
hence	O
in	O
a	O
REPLACE	O
statement	O
.	O
</s>
<s>
An	O
alternative	O
example	O
,	O
using	O
Elliott	B-Language
Algol	I-Language
I/O	B-General_Concept
is	O
as	O
follows	O
.	O
</s>
<s>
Elliott	B-Language
Algol	I-Language
used	O
different	O
characters	O
for	O
"	O
open-string-quote	O
"	O
and	O
"	O
close-string-quote	O
"	O
,	O
represented	O
here	O
by	O
and	O
.	O
</s>
<s>
Below	O
is	O
a	O
version	O
from	O
Elliott	B-Device
803	I-Device
Algol	B-Language
(	O
A104	O
)	O
.	O
</s>
<s>
The	O
standard	O
Elliott	B-Device
803	I-Device
used	O
five-hole	O
paper	O
tape	O
and	O
thus	O
only	O
had	O
upper	O
case	O
.	O
</s>
<s>
The	O
ICT	B-Device
1900	I-Device
series	I-Device
Algol	B-Language
I/O	B-General_Concept
version	O
allowed	O
input	O
from	O
paper	O
tape	O
or	O
punched	O
card	O
.	O
</s>
<s>
ALGOL	B-Language
68	I-Language
code	O
was	O
published	O
with	O
reserved	O
words	O
typically	O
in	O
lowercase	O
,	O
but	O
bolded	O
or	O
underlined	O
.	O
</s>
<s>
In	O
the	O
language	O
of	O
the	O
"	O
Algol	B-Language
68	I-Language
Report	O
"	O
the	O
input/output	B-General_Concept
facilities	O
were	O
collectively	O
called	O
the	O
"	O
Transput	B-General_Concept
"	O
.	O
</s>
<s>
The	O
ALGOLs	B-Language
were	O
conceived	O
at	O
a	O
time	O
when	O
character	O
sets	O
were	O
diverse	O
and	O
evolving	O
rapidly	O
;	O
also	O
,	O
the	O
ALGOLs	B-Language
were	O
defined	O
so	O
that	O
only	O
uppercase	O
letters	O
were	O
required	O
.	O
</s>
<s>
1960	O
:	O
IFIP	O
–	O
The	O
Algol	B-Language
60	I-Language
language	O
and	O
report	O
included	O
several	O
mathematical	O
symbols	O
which	O
are	O
available	O
on	O
modern	O
computers	O
and	O
operating	O
systems	O
,	O
but	O
,	O
unfortunately	O
,	O
were	O
unsupported	O
on	O
most	O
computing	O
systems	O
at	O
the	O
time	O
.	O
</s>
<s>
1961	O
September	O
:	O
ASCII	B-Protocol
–	O
The	O
ASCII	B-Protocol
character	I-Protocol
set	I-Protocol
,	O
then	O
in	O
an	O
early	O
stage	O
of	O
development	O
,	O
had	O
the	O
\	O
(	O
Back	O
slash	O
)	O
character	O
added	O
to	O
it	O
in	O
order	O
to	O
support	O
ALGOL	B-Language
's	O
boolean	O
operators	O
/	O
\	O
and	O
\/	O
.	O
</s>
<s>
1962	O
:	O
ALCOR	B-Language
–	O
This	O
character	O
set	O
included	O
the	O
unusual	O
"	O
᛭	O
"	O
runic	O
cross	O
character	O
for	O
multiplication	O
and	O
the	O
"	O
⏨	O
"	O
Decimal	O
Exponent	O
Symbol	O
for	O
floating	O
point	O
notation	O
.	O
</s>
<s>
1964	O
:	O
GOST	B-Algorithm
–	O
The	O
1964	O
Soviet	O
standard	O
GOST	B-Algorithm
10859	O
allowed	O
the	O
encoding	O
of	O
4-bit	O
,	O
5-bit	O
,	O
6-bit	O
and	O
7-bit	O
characters	O
in	O
ALGOL	B-Language
.	O
</s>
<s>
1968	O
:	O
The	O
"	O
Algol	B-Language
68	I-Language
Report	O
"	O
–	O
used	O
extant	O
ALGOL	B-Language
characters	O
,	O
and	O
further	O
adopted	O
→	O
,	O
↓	O
,	O
↑	O
,	O
□	O
,	O
⌊	O
,	O
⌈	O
,	O
⎩	O
,	O
⎧	O
,	O
○	O
,	O
⊥	O
,	O
and	O
¢	O
characters	O
which	O
can	O
be	O
found	O
on	O
the	O
IBM	O
2741	O
keyboard	O
with	O
typeball	O
(	O
or	O
golf	O
ball	O
)	O
print	O
heads	O
inserted	O
(	O
such	O
as	O
the	O
APL	O
golf	O
ball	O
)	O
.	O
</s>
<s>
These	O
became	O
available	O
in	O
the	O
mid-1960s	O
while	O
ALGOL	B-Language
68	I-Language
was	O
being	O
drafted	O
.	O
</s>
<s>
The	O
report	O
was	O
translated	O
into	O
Russian	O
,	O
German	O
,	O
French	O
,	O
and	O
Bulgarian	O
,	O
and	O
allowed	O
programming	O
in	O
languages	O
with	O
larger	O
character	O
sets	O
,	O
e.g.	O
,	O
Cyrillic	O
alphabet	O
of	O
the	O
Soviet	O
BESM-4	B-Device
.	O
</s>
<s>
All	O
ALGOL	B-Language
's	O
characters	O
are	O
also	O
part	O
of	O
the	O
Unicode	O
standard	O
and	O
most	O
of	O
them	O
are	O
available	O
in	O
several	O
popular	O
fonts	O
.	O
</s>
<s>
2009	O
October	O
:	O
Unicode	O
–	O
The	O
⏨	O
(	O
Decimal	O
Exponent	O
Symbol	O
)	O
for	O
floating	O
point	O
notation	O
was	O
added	O
to	O
Unicode	O
5.2	O
for	O
backward	O
compatibility	O
with	O
historic	O
Buran	O
programme	O
ALGOL	B-Language
software	O
.	O
</s>
