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ISO-IR-68

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7-bit ASCII variant used for APL

APL Character Set for Workspace Interchange
Alias(es)	IBM-371, ISO-IR-68
Language	APL syntax and symbols
Created by	Canadian Standards Association APL Working Group
Classification	7-bit modified ASCII with mandatoryBS composition

TheAPL Character Set for Workspace Interchange, registered for use withISO/IEC 2022 asISO-IR-68,^[1] is a character set developed by the APL Working Group of theCanadian Standards Association.^[2]IBM calls itCode page 371.^[3] It is one ofseveral APL code pages used for thesyntax and symbols used by theAPL programming language.^[2]

Character set

[edit]

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

[edit]

The encoding intends that certain of the above characters should be able to berepresented 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+2339APL FUNCTIONAL SYMBOL QUAD DIVIDE
_ and ∆	⍙	U+2359APL FUNCTIONAL SYMBOL DELTA UNDERBAR
_ and A to Z	A toZ
∘ and ⊥	⍎	U+234EAPL FUNCTIONAL SYMBOL DOWN TACK JOT
∘ and ∩	⍝	U+235DAPL FUNCTIONAL SYMBOL UP SHOE JOT
∘ and ⊤	⍕	U+2355APL FUNCTIONAL SYMBOL UP TACK JOT
' and .	!	U+0021EXCLAMATION MARK
' and ⎕	⍞	U+235EAPL FUNCTIONAL SYMBOL QUOTE QUAD
\| and ∇	⍒	U+234BAPL FUNCTIONAL SYMBOL DEL STILE
\| and ∆	⍋	U+2352APL FUNCTIONAL SYMBOL DELTA STILE
○ and \	⍉	U+2349APL FUNCTIONAL SYMBOL CIRCLE BACKSLASH
○ and \|	⌽	U+233DAPL FUNCTIONAL SYMBOL CIRCLE STILE
○ and ⋆	⍟	U+235FAPL FUNCTIONAL SYMBOL CIRCLE STAR
○ and -	⊖	U+2296CIRCLED MINUS
∼ and ∧	⍲	U+2372APL FUNCTIONAL SYMBOL UP CARET TILDE
∼ and ∨	⍱	U+2371APL FUNCTIONAL SYMBOL DOWN CARET TILDE
∼ and ∇	⍫	U+236BAPL FUNCTIONAL SYMBOL DEL TILDE
- and /	⌿	U+233FAPL FUNCTIONAL SYMBOL SLASH BAR
- and \	⍀	U+2340APL FUNCTIONAL SYMBOL BACKSLASH BAR

References

[edit]

^^a ^bCowan, John (2020-07-17)."ISO-IR-68 to Unicode".Unicode.org.Unicode, Inc. Retrieved2020-07-20.
^^a ^b ^cStandards Council of Canada (1983-06-01).APL Character Set for Workspace Interchange(PDF). ITSCJ/IPSJ.ISO-IR-68.
^"Code Page 00371"(PDF).IBM. Archived fromthe original(PDF) on 2015-07-08.

v t e Character encodings
Early telecommunications	Telegraph code Needle Morse Non-Latin Wabun/Kana Chinese Cyrillic Baudot and Murray Fieldata ASCII ISO/IEC 646 BCDIC Teletex andVideotex/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 Estonian Ukrainian Cyrillic
Bibliographic use	MARC-8 ANSEL CCCII/EACC ISO 5426 5426-2 5427 5428 6438 6862
National standards	ArmSCII Big5 BraSCII BSCII 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 OSCode 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	437 737 850 858 861 862 863 864 865 866 867 868 869 899 904 932 936 942 949 950 951 1040 1043 1046 1098 1115 1116 1117 1118 1127 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 1133
Windows code pages	CER-GS 932 936 (GBK) 950 Extended Latin-8 1250 1251 1252 1253 1254 1255 1256 1257 1258 1270 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 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

APL programming

Features

Implementations

Major	Dyalog APL APL2 →APLX SHARP APL NARS → NARS2000°
Dialects	A →A+° APLNext →VisualAPL ELI GNU APL° J° kdb+ K,Q Polymorphic Programming Language (PPL)

Community

Professional
associations

Association for Computing Machinery: SIGAPL
British APL Association

Organizations

Business	Ampere Analogic Corporation APL2000 CompuServe Digital Equipment Corporation (DEC) DNA Systems Dyalog Ltd. IBM I. P. Sharp Associates KX Systems Micro Computer Machines (MCM) Science Research Associates Scientific Time Sharing Corporation (STSC) Soliton Incorporated Telecompute Integrated Systems, Inc. Time Sharing Resources (TSR)
Education	Carnegie Mellon University (CMU) University of Maryland

People

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	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

	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

	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