This character is a Nonspacing Mark and is mainly used in the Mahajani 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+11173 prohibits a line break before it.
The Wikipedia has the following information about this codepoint:
The nuqta (Hindi: ΰ€¨ΰ₯ΰ€ΰ€Όΰ₯ΰ€€ΰ€Ύ, Urdu: ΩΩΨ·Ϋ, romanized: nuqtΔ; sometimes also spelled nukta), is a diacritic mark that was introduced in Devanagari and some other Indic scripts to represent sounds not present in the original scripts. It takes the form of a dot placed below a character. This idea is inspired from the Arabic script; for example, there are some letters in Urdu that share the same basic shape but differ in the placement of dots(s) or nuqta(s) in the Perso-Arabic script: the letter ΨΉ ayn, with the addition of a nuqta on top, becomes the letter ΨΊ gΝhayn.
Representations
System
Representation (click value to copy)
NΒΊ
70003
UTF-8
F0 91 85 B3
UTF-16
D8 04 DD 73
UTF-32
00 01 11 73
URL-Quoted
%F0%91%85%B3
HTML hex reference
𑅳
Wrong windows-1252 Mojibake
Γ’βΕΓ°ββ¦Β³
Encoding: GB18030 (hex bytes)
90 33 C5 37
RFC 5137
\u'11173'
Bash and Zsh inside echo -e
\U00011173
C and C++
\U00011173
C#
\U00011173
CSS
\011173
Excel
=UNICHAR(70003)
Go
\U00011173
JavaScript
\uD804\uDD73
Modern JavaScript since ES6
\u{11173}
JSON
\uD804\uDD73
Java
\uD804\uDD73
Lua
\u{11173}
Matlab
char(70003)
Perl
"\x{11173}"
PHP
\u{11173}
PostgreSQL
U&'\+011173'
PowerShell
`u{11173}
Python
\U00011173
Ruby
\u{11173}
Rust
\u{11173}
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