U+0591 HEBREW ACCENT ETNAHTA
U+0591 was added to Unicode in version 2.0 (1996). It belongs to the block 
This character is a Nonspacing Mark and is mainly used in the Hebrew script. The character is also known as atnah.
The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Nonspacing Mark and is not mirrored. In text U+0591 behaves as Combining Mark regarding line breaks. It has type Extend for sentence and Extend for word breaks. The Grapheme Cluster Break is Extend.
The Wikipedia has the following information about this codepoint:
Etnachta (Hebrew: אֶתְנַחְתָּא, with variant English spellings) is one of the most common cantillation marks in the Torah and Haftarah. It is the anchor for the Etnachta group, which in full consists of four different trope sounds, not all of which are always present. These are Mercha, Tipcha, Munach, and its namesake Etnachta.
The Etnachta group marks the end of the first segment of a verse. Therefore, it never occurs more than once in a single verse.
An example is in the very first verse of the Book of Genesis, the statement that God created is marked with an Etnachta, showing the completion of God’s creation.
The Hebrew word אֶתְנַחְתָּא translates into English as pause. This name is given because of its central location within a verse.
Representations
| System | Representation |
|---|---|
| Nº | 1425 |
| UTF-8 | D6 91 |
| UTF-16 | 05 91 |
| UTF-32 | 00 00 05 91 |
| URL-Quoted | %D6%91 |
| HTML-Escape | ֑ |
| Wrong windows-1252 Mojibake | Ö |
| alias | atnah |
Elsewhere
Complete Record
| Property | Value |
|---|---|
| Age (age) | 2.0 |
| Unicode Name (na) | HEBREW ACCENT ETNAHTA |
| Unicode 1 Name (na1) | — |
| Block (blk) | Hebrew |
| General Category (gc) | Nonspacing Mark |
| Script (sc) | Hebrew |
| Bidirectional Category (bc) | Nonspacing Mark |
| Combining Class (ccc) | Below |
| Decomposition Type (dt) | None |
| Decomposition Mapping (dm) |
 |
| Lowercase (Lower) | ✘ |
| Simple Lowercase Mapping (slc) |
|
| Lowercase Mapping (lc) |
|
| Uppercase (Upper) | ✘ |
| Simple Uppercase Mapping (suc) |
|
| Uppercase Mapping (uc) |
|
| Simple Titlecase Mapping (stc) |
|
| Titlecase Mapping (tc) |
|
| Case Folding (cf) |
|
| ASCII Hex Digit (AHex) | ✘ |
| Alphabetic (Alpha) | ✘ |
| Bidi Control (Bidi_C) | ✘ |
| Bidi Mirrored (Bidi_M) | ✘ |
| Bidi Paired Bracket (bpb) |
|
| Bidi Paired Bracket Type (bpt) | None |
| Cased (Cased) | ✘ |
| Composition Exclusion (CE) | ✘ |
| Case Ignorable (CI) | ✔ |
| Full Composition Exclusion (Comp_Ex) | ✘ |
| 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) | ✘ |
| Dash (Dash) | ✘ |
| Deprecated (Dep) | ✘ |
| Default Ignorable Code Point (DI) | ✘ |
| Diacritic (Dia) | ✔ |
| East Asian Width (ea) | Neutral |
| Extender (Ext) | ✘ |
| FC NFKC Closure (FC_NFKC) |
|
| Grapheme Cluster Break (GCB) | Extend |
| Grapheme Base (Gr_Base) | ✘ |
| Grapheme Extend (Gr_Ext) | ✔ |
| Grapheme Link (Gr_Link) | ✘ |
| Hex Digit (Hex) | ✘ |
| Hangul Syllable Type (hst) | Not Applicable |
| Hyphen (Hyphen) | ✘ |
| ID Continue (IDC) | ✔ |
| Ideographic (Ideo) | ✘ |
| ID Start (IDS) | ✘ |
| IDS Binary Operator (IDSB) | ✘ |
| IDS Trinary Operator and (IDST) | ✘ |
| InMC (InMC) | — |
| Indic Positional Category (InPC) | NA |
| Indic Syllabic Category (InSC) | Other |
| ISO 10646 Comment (isc) | — |
| Joining Group (jg) | No_Joining_Group |
| Join Control (Join_C) | ✘ |
| Jamo Short Name (JSN) | — |
| Joining Type (jt) | Transparent |
| Line Break (lb) | Combining Mark |
| Logical Order Exception (LOE) | ✘ |
| Math (Math) | ✘ |
| Noncharacter Code Point (NChar) | ✘ |
| NFC Quick Check (NFC_QC) | Yes |
| NFD Quick Check (NFD_QC) | Yes |
| NFKC Casefold (NFKC_CF) |
|
| NFKC Quick Check (NFKC_QC) | Yes |
| NFKD Quick Check (NFKD_QC) | Yes |
| Numeric Type (nt) | None |
| Numeric Value (nv) | NaN |
| 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) | ✘ |
| Pattern Syntax (Pat_Syn) | ✘ |
| Pattern White Space (Pat_WS) | ✘ |
| Quotation Mark (QMark) | ✘ |
| Radical (Radical) | ✘ |
| Sentence Break (SB) | Extend |
| Simple Case Folding (scf) |
|
| Script Extension (scx) | Hebrew |
| Soft Dotted (SD) | ✘ |
| STerm (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) | ✘ |