This character is a Other Letter and is mainly used in the Samaritan script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from right to left. When changing direction it is not mirrored. The word that U+0806 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Zayin (also spelled zain or zayn or simply zay) is the seventh letter of the Semitic abjads, including Arabic zāyز, Aramaic zain 𐡆, Hebrew zayīnז, Phoenician zayn 𐤆, and Syriac zayn ܙ. It represents the sound [z].
The Phoenician letter gave rise to the Greek zeta (Ζ), Etruscan z , Latin Z, and Cyrillic Ze З, as well as Ж.
Representations
System
Representation (click value to copy)
Nº
2054
UTF-8
E0 A0 86
UTF-16
08 06
UTF-32
00 00 08 06
URL-Quoted
%E0%A0%86
HTML hex reference
ࠆ
Wrong windows-1252 Mojibake
à †
Encoding: GB18030 (hex bytes)
81 31 B3 38
RFC 5137
\u'0806'
Bash and Zsh inside echo -e
\u0806
C and C++
\u0806
C#
\u0806
CSS
\000806
Excel
=UNICHAR(2054)
Go
\u0806
JavaScript
\u0806
Modern JavaScript since ES6
\u{806}
JSON
\u0806
Java
\u0806
Lua
\u{806}
Matlab
char(2054)
Perl
"\x{806}"
PHP
\u{806}
PostgreSQL
U&'\0806'
PowerShell
`u{806}
Python
\u0806
Ruby
\u{806}
Rust
\u{806}
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