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+0808 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Teth, also written as Ṭēth or Tet, is the ninth letter of the Semitic abjads, including Arabic ṭāʾط, Aramaic
ṭēṯ 𐡈, Hebrew ṭētט, Phoenician ṭēt 𐤈, and Syriac ṭēṯ ܛ. The Phoenician letter also gave rise to the Greek theta (Θ), originally an aspirated voiceless dental stop but now used for the voiceless dental fricative. The Arabic letter (ط) is sometimes transliterated as Tah in English, for example in Arabic script in Unicode.
The sound value of Teth is /tˤ/, one of the Semitic emphatic consonants.
Representations
System
Representation (click value to copy)
Nº
2056
UTF-8
E0 A0 88
UTF-16
08 08
UTF-32
00 00 08 08
URL-Quoted
%E0%A0%88
HTML hex reference
ࠈ
Wrong windows-1252 Mojibake
à ˆ
Encoding: GB18030 (hex bytes)
81 31 B4 30
RFC 5137
\u'0808'
Bash and Zsh inside echo -e
\u0808
C and C++
\u0808
C#
\u0808
CSS
\000808
Excel
=UNICHAR(2056)
Go
\u0808
JavaScript
\u0808
Modern JavaScript since ES6
\u{808}
JSON
\u0808
Java
\u0808
Lua
\u{808}
Matlab
char(2056)
Perl
"\x{808}"
PHP
\u{808}
PostgreSQL
U&'\0808'
PowerShell
`u{808}
Python
\u0808
Ruby
\u{808}
Rust
\u{808}
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