This character is a Other Letter and is mainly used in the Devanagari script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+0906 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
Ā is a vowel of Indic abugidas. In modern Indic scripts, Aa is derived from the early "Ashoka" Brahmi letter after having gone through the Gupta letter . As an Indic vowel, "Ā" comes in two normally distinct forms: 1) as an independent letter, and 2) as a vowel sign for modifying a base consonant. Bare consonants without a modifying vowel sign have the inherent short "A" vowel.
Representations
System
Representation (click value to copy)
Nº
2310
UTF-8
E0 A4 86
UTF-16
09 06
UTF-32
00 00 09 06
URL-Quoted
%E0%A4%86
HTML hex reference
आ
Wrong windows-1252 Mojibake
आ
Encoding: GB18030 (hex bytes)
81 31 CD 34
Adobe Glyph List
aadeva
RFC 5137
\u'0906'
Bash and Zsh inside echo -e
\u0906
C and C++
\u0906
C#
\u0906
CSS
\000906
Excel
=UNICHAR(2310)
Go
\u0906
JavaScript
\u0906
Modern JavaScript since ES6
\u{906}
JSON
\u0906
Java
\u0906
Lua
\u{906}
Matlab
char(2310)
Perl
"\x{906}"
PHP
\u{906}
PostgreSQL
U&'\0906'
PowerShell
`u{906}
Python
\u0906
Ruby
\u{906}
Rust
\u{906}
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