Source: Noto Sans

U+0318 Combining Left Tack Below

U+0318 was added in Unicode version 1.1 in 1993. It belongs to the block U+0300 to U+036F Combining Diacritical Marks in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and inherits its script property from the preceding character.

The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+0318 prohibits a line break before it.

The Wikipedia has the following information about this codepoint:

In phonetics, advanced tongue root (ATR) and retracted tongue root (RTR) are contrasting states of the root of the tongue during the pronunciation of vowels in some languages, especially in Western and Eastern Africa, but also in Kazakh and Mongolian. ATR vs RTR was once suggested to be the basis for the distinction between tense and lax vowels in European languages such as German, but that no longer seems tenable.

Representations

System	Representation
Nº	792
UTF-8	CC 98
UTF-16	03 18
UTF-32	00 00 03 18
URL-Quoted	%CC%98
HTML hex reference	̘
Wrong windows-1252 Mojibake	â—ŒÌ˜
Encoding: EUC_JIS_2004 (hex bytes)	AB F8
Encoding: EUC_JISX0213 (hex bytes)	AB F8
Encoding: GB18030 (hex bytes)	81 30 BF 30
Encoding: ISO2022_JP_2004 (hex bytes)	1B 24 28 51 2B 78 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)	1B 24 28 4F 2B 78 1B 28 42
Encoding: SHIFT_JIS_2004 (hex bytes)	86 98
Encoding: SHIFT_JISX0213 (hex bytes)	86 98
L^AT_EX	{\fontencoding{LECO}\selectfont\char184}
AGL: Latin-5	uni0318
Adobe Glyph List	lefttackbelowcmb

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	COMBINING LEFT TACK BELOW
Unicode 1 Name (na1)	NON-SPACING LEFT TACK BELOW
Block (blk)	Combining Diacritical Marks
General Category (gc)	Nonspacing Mark
Script (sc)	Inherited
Bidirectional Category (bc)	Nonspacing Mark
Combining Class (ccc)	Below
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Combining Left Tack Below
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Combining Left Tack Below
Lowercase Mapping (lc)	Combining Left Tack Below
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Combining Left Tack Below
Uppercase Mapping (uc)	Combining Left Tack Below
Simple Titlecase Mapping (stc)	Combining Left Tack Below
Titlecase Mapping (tc)	Combining Left Tack Below
Case Folding (cf)	Combining Left Tack Below
ASCII Hex Digit (AHex)	✘
Alphabetic (Alpha)	✘
Bidi Control (Bidi_C)	✘
Bidi Mirrored (Bidi_M)	✘
Composition Exclusion (CE)	✘
Case Ignorable (CI)	✔
Changes When Casefolded (CWCF)	✘
Changes When Casemapped (CWCM)	✘
Changes When NFKC Casefolded (CWKCF)	✘
Changes When Lowercased (CWL)	✘
Changes When Titlecased (CWT)	✘
Changes When Uppercased (CWU)	✘
Cased (Cased)	✘
Full Composition Exclusion (Comp_Ex)	✘
Default Ignorable Code Point (DI)	✘
Dash (Dash)	✘
Deprecated (Dep)	✘
Diacritic (Dia)	✔
Emoji Modifier Base (EBase)	✘
Emoji Component (EComp)	✘
Emoji Modifier (EMod)	✘
Emoji Presentation (EPres)	✘
Emoji (Emoji)	✘
Extender (Ext)	✘
Extended Pictographic (ExtPict)	✘
FC NFKC Closure (FC_NFKC)	Combining Left Tack Below
Grapheme Cluster Break (GCB)	Extend
Grapheme Base (Gr_Base)	✘
Grapheme Extend (Gr_Ext)	✔
Grapheme Link (Gr_Link)	✘
Hex Digit (Hex)	✘
Hyphen (Hyphen)	✘
ID Continue (IDC)	✔
ID Start (IDS)	✘
IDS Binary Operator (IDSB)	✘
IDS Trinary Operator and (IDST)	✘
IDSU (IDSU)	0
ID_Compat_Math_Continue (ID_Compat_Math_Continue)	0
ID_Compat_Math_Start (ID_Compat_Math_Start)	0
Ideographic (Ideo)	✘
InCB (InCB)	Extend
Indic Mantra Category (InMC)	—
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Other
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘
Logical Order Exception (LOE)	✘
Modifier Combining Mark (MCM)	✘
Math (Math)	✘
Noncharacter Code Point (NChar)	✘
NFC Quick Check (NFC_QC)	Yes
NFD Quick Check (NFD_QC)	Yes
NFKC Casefold (NFKC_CF)	Combining Left Tack Below
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Combining Left Tack Below
NFKD Quick Check (NFKD_QC)	Yes
Other Alphabetic (OAlpha)	✘
Other Default Ignorable Code Point (ODI)	✘
Other Grapheme Extend (OGr_Ext)	✘
Other ID Continue (OIDC)	✘
Other ID Start (OIDS)	✘
Other Lowercase (OLower)	✘
Other Math (OMath)	✘
Other Uppercase (OUpper)	✘
Prepended Concatenation Mark (PCM)	✘
Pattern Syntax (Pat_Syn)	✘
Pattern White Space (Pat_WS)	✘
Quotation Mark (QMark)	✘
Regional Indicator (RI)	✘
Radical (Radical)	✘
Sentence Break (SB)	Extend
Soft Dotted (SD)	✘
Sentence Terminal (STerm)	✘
Terminal Punctuation (Term)	✘
Unified Ideograph (UIdeo)	✘
Variation Selector (VS)	✘
Word Break (WB)	Extend
White Space (WSpace)	✘
XID Continue (XIDC)	✔
XID Start (XIDS)	✘
Expands On NFC (XO_NFC)	✘
Expands On NFD (XO_NFD)	✘
Expands On NFKC (XO_NFKC)	✘
Expands On NFKD (XO_NFKD)	✘
Bidi Paired Bracket (bpb)	Combining Left Tack Below
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	ambiguous
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Transparent
Line Break (lb)	Combining Mark
Numeric Type (nt)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Combining Left Tack Below
Script Extension (scx)
Vertical Orientation (vo)	R