Source: Noto Sans Hebrew

U+059E Hebrew Accent Gershayim

U+059E was added in Unicode version 2.0 in 1996. It belongs to the block U+0590 to U+05FF Hebrew in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and is mainly used in the Hebrew script.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+059E prohibits a line break before it.

The Wikipedia has the following information about this codepoint:

Gershayim (Hebrew: גֵּרְשַׁיִם, with variant English spellings) is a cantillation mark that is found in the Torah, Haftarah, and other books of the Hebrew Bible.
The Hebrew word גֵּרְשַׁיִם translates into English as double geresh.

Representations

System	Representation
Nº	1438
UTF-8	D6 9E
UTF-16	05 9E
UTF-32	00 00 05 9E
URL-Quoted	%D6%9E
HTML hex reference	֞
Wrong windows-1252 Mojibake	â—ŒÖž
Encoding: GB18030 (hex bytes)	81 30 F4 32
Adobe Glyph List	gershayimaccenthebrew

Elsewhere

Complete Record

Property	Value
Age (age)	2.0 (1996)
Unicode Name (na)	HEBREW ACCENT GERSHAYIM
Unicode 1 Name (na1)	—
Block (blk)	Hebrew
General Category (gc)	Nonspacing Mark
Script (sc)	Hebrew
Bidirectional Category (bc)	Nonspacing Mark
Combining Class (ccc)	Above
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Hebrew Accent Gershayim
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Hebrew Accent Gershayim
Lowercase Mapping (lc)	Hebrew Accent Gershayim
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Hebrew Accent Gershayim
Uppercase Mapping (uc)	Hebrew Accent Gershayim
Simple Titlecase Mapping (stc)	Hebrew Accent Gershayim
Titlecase Mapping (tc)	Hebrew Accent Gershayim
Case Folding (cf)	Hebrew Accent Gershayim
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)	Hebrew Accent Gershayim
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)	Hebrew Accent Gershayim
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Hebrew Accent Gershayim
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)	Hebrew Accent Gershayim
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	neutral
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)	Hebrew Accent Gershayim
Script Extension (scx)
Vertical Orientation (vo)	R