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ISO-IR-68

ISO-IR-68[1] is a character set developed by the Canadian Standards Association, and registered for use in ISO character set designation mechanisms.[2] It is used to represent the symbols used by the APL programming language.[2]

Character set

ISO IR-68[1]
_0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F
0_ NUL
0000
SOH
0001
STX
0002
ETX
0003
EOT
0004
ENQ
0005
ACK
0006
BEL
0007
BS
0008
HT
0009
LF
000A
VT
000B
FF
000C
CR
000D
SO
000E
SI
000F
1_ DLE
0010
DC1
0011
DC2
0012
DC3
0013
DC4
0014
NAK
0015
SYN
0016
ETB
0017
CAN
0018
EM
0019
SUB
001A
ESC
001B
FS
001C
GS
001D
RS
001E
US
001F
2_ SP
0020
¨
00A8
)
0029
<
003C

2264
=
003D
>
003E
]
005D

2227

2228

2260
÷
00F7
,
002C
+
002B
.
002E
/
002F
3_ 0
0030
1
0031
2
0032
3
0033
4
0034
5
0035
6
0036
7
0037
8
0038
9
0039
(
0028
[
005B
;
003B
×
00D7
:
003A
\
005C
4_ ¯
00AF

237A

22A5

2229

230A

220A
_
005F

2207

2206

2373

2218
'
0027

2295
|
007C

22A4

25CB
5_
22C6
?
003F

2374

2309

223C

2193

222A

2375

2283

2191

2282

2190

22A2

2192

2265
-
002D
6_
22C4
A
0041
B
0042
C
0043
D
0044
E
0045
F
0046
G
0047
H
0048
I
0049
J
004A
K
004B
L
004C
M
004D
N
004E
O
004F
7_ P
0050
Q
0051
R
0052
S
0053
T
0054
U
0055
V
0056
W
0057
X
0058
Y
0059
Z
005A
{
007B

22A3
}
007D
$
0024
DEL
007F

Composite characters

The encoding intends that certain of the above characters should be able to be represented at the same character position to produce additional symbols required for APL as composite characters, such as the following:[2]

Combined characters Composite character(s) Unicode
÷ and U+2339
_ and ∆ U+2359
_ and A to Z A to Z
∘ and ⊥ U+234E
∘ and ∩ U+235D
∘ and ⊤ U+2355
' and . ! U+0021
' and ⎕ U+235E
| and ∇ U+234B
| and ∆ U+2352
○ and \ U+2349
○ and | U+233D
○ and ⋆ U+235F
○ and - U+2296
∼ and ∧ U+2372
∼ and ∨ U+2371
∼ and ∇ U+236B
- and / U+233F
- and \ U+2340

References

  1. ^ a b Cowan, John (2004-06-29). "ISO-IR-68 to Unicode". Unicode.org. Unicode, Inc. Retrieved 19 June 2017.
  2. ^ a b c Standards Council of Canada (1983-06-01). APL Character Set for Workspace Interchange (PDF). ITSCJ/IPSJ. ISO-IR-68.