ISO-IR-68

APL Character Set for Workspace Interchange
Alias(es)	IBM-371, ISO-IR-68
Language(s)	Canadian Standards Association APL Working Group
Classification	7-bit modified ASCII with mandatory BS composition
	v; t; e;

The APL Character Set for Workspace Interchange, registered for use with

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
0x	NUL	SOH	STX	ETX	EOT	ENQ	ACK	BEL	BS	HT	LF	VT	FF	CR	SO	SI
1x	DLE	DC1	DC2	DC3	DC4	NAK	SYN	ETB	CAN	EM	SUB	ESC	FS	GS	RS	US
2x	SP	¨	)	<	≤	=	>	]	∨	∧	≠	÷	,	+	.	/
3x	0	1	2	3	4	5	6	7	8	9	(	[	;	×	:	\
4x	¯	⍺	⊥	∩	⌊	∊	_	∇	∆	⍳	∘	'	⎕	∣	⊤	○
5x	⋆	?	⍴	⌈	∼	↓	∪	⍵	⊃	↑	⊂	←	⊢	→	≥	-
6x	⋄	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
7x	P	Q	R	S	T	U	V	W	X	Y	Z	{	⊣	}	$	DEL

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 APL FUNCTIONAL SYMBOL QUAD DIVIDE
_ and ∆	⍙	U+2359 APL FUNCTIONAL SYMBOL DELTA UNDERBAR
_ and A to Z	A to Z
∘ and ⊥	⍎	U+234E APL FUNCTIONAL SYMBOL DOWN TACK JOT
∘ and ∩	⍝	U+235D APL FUNCTIONAL SYMBOL UP SHOE JOT
∘ and ⊤	⍕	U+2355 APL FUNCTIONAL SYMBOL UP TACK JOT
' and .	!	U+0021 EXCLAMATION MARK
' and ⎕	⍞	U+235E APL FUNCTIONAL SYMBOL QUOTE QUAD
\| and ∇	⍒	U+234B APL FUNCTIONAL SYMBOL DEL STILE
\| and ∆	⍋	U+2352 APL FUNCTIONAL SYMBOL DELTA STILE
○ and \	⍉	U+2349 APL FUNCTIONAL SYMBOL CIRCLE BACKSLASH
○ and \|	⌽	U+233D APL FUNCTIONAL SYMBOL CIRCLE STILE
○ and ⋆	⍟	U+235F APL FUNCTIONAL SYMBOL CIRCLE STAR
○ and -	⊖	U+2296 CIRCLED MINUS
∼ and ∧	⍲	U+2372 APL FUNCTIONAL SYMBOL UP CARET TILDE
∼ and ∨	⍱	U+2371 APL FUNCTIONAL SYMBOL DOWN CARET TILDE
∼ and ∇	⍫	U+236B APL FUNCTIONAL SYMBOL DEL TILDE
- and /	⌿	U+233F APL FUNCTIONAL SYMBOL SLASH BAR
- and \	⍀	U+2340 APL FUNCTIONAL SYMBOL BACKSLASH BAR

References

^ ^a ^b Cowan, John (2020-07-17). "ISO-IR-68 to Unicode". Unicode.org. Unicode, Inc. Retrieved 2020-07-20.
^
ISO-IR
-68.
^ "Code Page 00371" (PDF). IBM. Archived from the original (PDF) on 2015-07-08.

[unicode2017-1] Cowan, John (2020-07-17). "ISO-IR-68 to Unicode". Unicode.org. Unicode, Inc. Retrieved 2020-07-20.

[ir68-2] 
ISO-IR
-68.

[3] "Code Page 00371" (PDF). IBM. Archived from the original (PDF) on 2015-07-08.

[2]

[1]

v t e Character encodings
Early telecommunications	Telegraph code Needle Morse Non-Latin Wabun/Kana Chinese Cyrillic Korean Baudot and Murray Fieldata ASCII ISO/IEC 646 BCDIC Teletex and Videotex/Teletext T.51/ISO/IEC 6937 ITU T.61 ITU T.101 World System Teletext background sets Transcode
ISO/IEC 8859	Approved parts -1 (Western Europe) -2 (Central Europe) -3 (Maltese/Esperanto) -4 (North Europe) -5 (Cyrillic) -6 (Arabic) -7 (Greek) -8 (Hebrew) -9 (Turkish) -10 (Nordic) -11 (Thai) -13 (Baltic) -14 (Celtic) -15 (New Western Europe) -16 (Romanian) Abandoned parts -12 (Devanagari) Proposed but not approved KOI-8 Cyrillic Sámi Adaptations Welsh Barents Cyrillic Estonian Ukrainian Cyrillic
Bibliographic use	MARC-8 ANSEL CCCII/EACC ISO 5426 5426-2 5427 5428 6438 6862
National standards	ArmSCII Big5 BraSCII CNS 11643 DIN 66003 ELOT 927 GOST 10859 GB 2312 GB 12345 GB 12052 GB 18030 HKSCS ISCII JIS X 0201 JIS X 0208 JIS X 0212 JIS X 0213 KOI-7 KPS 9566 KS X 1001 KS X 1002 LST 1564 LST 1590-4 PASCII Shift JIS SI 960 TIS-620 TSCII VISCII VSCII YUSCII
ISO/IEC 2022	ISO/IEC 8859 ISO/IEC 10367 Extended Unix Code / EUC
Mac OS Code pages ("scripts")	Armenian Arabic Barents Cyrillic Celtic Central European Croatian Cyrillic Devanagari Farsi (Persian) Font X (Kermit) Gaelic Georgian Greek Gujarati Gurmukhi Hebrew Iceland Inuit Keyboard Latin (Kermit) Maltese/Esperanto Ogham Roman Romanian Sámi Turkish Turkic Cyrillic Ukrainian VT100
DOS code pages	437 668 708 720 737 770 773 775 776 777 778 850 851 852 853 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 897 899 903 904 932 936 942 949 950 951 1034 1040 1042 1043 1044 1098 1115 1116 1117 1118 1127 3846 ABICOMP CS Indic CSX Indic CSX+ Indic CWI-2 Iran System Kamenický Mazovia MIK
IBM AIX code pages	895 896 912 915 921 922 1006 1008 1009 1010 1012 1013 1014 1015 1016 1017 1018 1019 1046 1124 1133
Windows code pages	CER-GS 932 936 (GBK) 950 1169 Extended Latin-8 1250 1251 1252 1253 1254 1255 1256 1257 1258 1270 Cyrillic + Finnish Cyrillic + French Cyrillic + German Polytonic Greek
EBCDIC code pages	Japanese language in EBCDIC DKOI
DEC terminals (VTx)	Multinational (MCS) National Replacement (NRCS) French Canadian Swiss Spanish United Kingdom Dutch Finnish French Norwegian and Danish Swedish Norwegian and Danish (alternative) 8-bit Greek 8-bit Turkish SI 960 Hebrew Special Graphics Technical (TCS)
Platform specific	1052 1053 1054 1055 1056 1057 1058 Acorn RISC OS Amstrad CPC Apple II ATASCII Atari ST BICS Casio calculators CDC Compucolor 8001 Compucolor II CP/M+ DEC RADIX 50 DEC MCS/NRCS DG International Galaksija GEM GSM 03.38 HP Roman HP FOCAL HP RPL SQUOZE LICS LMBCS MSX NEC APC NeXT PETSCII PostScript Standard PostScript Latin 1 SAM Coupé Sega SC-3000 Sharp calculators Sharp MZ Sinclair QL Teletext TI calculators TRS-80 Ventura International WISCII XCCS ZX80 ZX81 ZX Spectrum
Unicode / ISO/IEC 10646	UTF-1 UTF-7 UTF-8 UTF-16 UTF-32 UTF-EBCDIC GB 18030 DIN 91379 BOCU-1 CESU-8 SCSU TACE16 Comparison of Unicode encodings
TeX typesetting system	Cork LY1 OML OMS OT1
Miscellaneous code pages	ABICOMP ASMO 449 Digital encoding of APL symbols ISO-IR-68 ARIB STD-B24 Fieldata HZ IEC-P27-1 INIS 7-bit 8-bit ISO-IR-169 ISO 2033 KOI KOI8-R KOI8-RU KOI8-U Mojikyō SEASCII Stanford/ITS Symbol TRON Unified Hangul Code
Control character	Morse prosigns C0 and C1 control codes ISO/IEC 6429 JIS X 0211 Unicode control, format and separator characters Whitespace characters
Related topics	CCSID Character encodings in HTML Charset detection Han unification Hardware code page MICR code Mojibake Variable-length encoding
Character sets