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Source: Noto Sans Ogham

U+1691 Ogham Letter Onn

U+1691 was added to Unicode in version 3.0 (1999). It belongs to the block U+1680 to U+169F Ogham in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Letter and is mainly used in the Ogham script.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+1691 behaves as Alphabetic regarding line breaks. It has type Other Letter for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Onn is the Irish name of the seventeenth letter of the Ogham alphabet, ᚑ, meaning "ash-tree", which is related to Welsh onn(en), from the root was *ōs-, *osen 'ash'. Its phonetic value is [o]. The letter's Bríatharogam kennings are the following:

congnaid ech "wounder of horses"

féthem soíre "smoothest of craftsmanship"

lúth fían "[equipment] of warrior bands"
These refer to different uses of ashwood as horsewhips, wood used by carpenters, and for spears. In the Old Irish period, onn "ash" was replaced by uinnius. McManus takes this as an indication that the Ogham letter names date to the Primitive Irish period.

Representations

System	Representation
Nº	5777
UTF-8	E1 9A 91
UTF-16	16 91
UTF-32	00 00 16 91
URL-Quoted	%E1%9A%91
HTML hex reference	ᚑ
Wrong windows-1252 Mojibake	áš‘

Elsewhere

Complete Record

Property	Value
Age	3.0 (1999)
Unicode Name	OGHAM LETTER ONN
Unicode 1 Name	—
Block	Ogham
General Category	Other Letter
Script	Ogham
Bidirectional Category	Left To Right
Combining Class	Not Reordered
Decomposition Type	None
Decomposition Mapping	Ogham Letter Onn
Lowercase	✘
Simple Lowercase Mapping	Ogham Letter Onn
Lowercase Mapping	Ogham Letter Onn
Uppercase	✘
Simple Uppercase Mapping	Ogham Letter Onn
Uppercase Mapping	Ogham Letter Onn
Simple Titlecase Mapping	Ogham Letter Onn
Titlecase Mapping	Ogham Letter Onn
Case Folding	Ogham Letter Onn
ASCII Hex Digit	✘
Alphabetic	✔
Bidi Control	✘
Bidi Mirrored	✘
Composition Exclusion	✘
Case Ignorable	✘
Changes When Casefolded	✘
Changes When Casemapped	✘
Changes When NFKC Casefolded	✘
Changes When Lowercased	✘
Changes When Titlecased	✘
Changes When Uppercased	✘
Cased	✘
Full Composition Exclusion	✘
Default Ignorable Code Point	✘
Dash	✘
Deprecated	✘
Diacritic	✘
Emoji Modifier Base	✘
Emoji Component	✘
Emoji Modifier	✘
Emoji Presentation	✘
Emoji	✘
Extender	✘
Extended Pictographic	✘
FC NFKC Closure	Ogham Letter Onn
Grapheme Cluster Break	Any
Grapheme Base	✔
Grapheme Extend	✘
Grapheme Link	✘
Hex Digit	✘
Hyphen	✘
ID Continue	✔
ID Start	✔
IDS Binary Operator	✘
IDS Trinary Operator and	✘
Ideographic	✘
Indic Mantra Category	—
Indic Positional Category	NA
Indic Syllabic Category	Other
Jamo Short Name	—
Join Control	✘
Logical Order Exception	✘
Math	✘
Noncharacter Code Point	✘
NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Casefold	Ogham Letter Onn
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Other Alphabetic	✘
Other Default Ignorable Code Point	✘
Other Grapheme Extend	✘
Other ID Continue	✘
Other ID Start	✘
Other Lowercase	✘
Other Math	✘
Other Uppercase	✘
Prepended Concatenation Mark	✘
Pattern Syntax	✘
Pattern White Space	✘
Quotation Mark	✘
Regional Indicator	✘
Radical	✘
Sentence Break	Other Letter
Soft Dotted	✘
Sentence Terminal	✘
Terminal Punctuation	✘
Unified Ideograph	✘
Variation Selector	✘
Word Break	Alphabetic Letter
White Space	✘
XID Continue	✔
XID Start	✔
Expands On NFC	✘
Expands On NFD	✘
Expands On NFKC	✘
Expands On NFKD	✘
Bidi Paired Bracket	Ogham Letter Onn
Bidi Paired Bracket Type	None
East Asian Width	Neutral
Hangul Syllable Type	Not Applicable
ISO 10646 Comment	—
Joining Group	No_Joining_Group
Joining Type	Non Joining
Line Break	Alphabetic
Numeric Type	None
Numeric Value	not a number
Simple Case Folding	Ogham Letter Onn
Script Extension
Vertical Orientation	R