U+0354 COMBINING LEFT ARROWHEAD BELOW

U+0354 was added to Unicode in version 4.0 (2003). It belongs to the block Combining Diacritical Marks in the Basic Multilingual Plane.

This character is a Nonspacing Mark and inherits its script property from the preceding character.

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Nonspacing Mark and is not mirrored. In text U+0354 behaves as Combining Mark regarding line breaks. It has type Extend for sentence and Extend for word breaks. The Grapheme Cluster Break is Extend.

The Wikipedia has the following information about this codepoint:

The Uralic Phonetic Alphabet (UPA) or Finno-Ugric transcription system is a phonetic transcription or notational system used predominantly for the transcription and reconstruction of Uralic languages. It was first published in 1901 by Eemil Nestor Setälä, a Finnish linguist.

Unlike the International Phonetic Alphabet (IPA) notational standard which concentrates on accurately and uniquely transcribing the phonemes of a language, the UPA is also used to denote the functional categories of a language, as well as their phonetic quality. For this reason, it is not possible to automatically convert a UPA transcription into an IPA one.

The basic UPA characters are based on the Finnish alphabet where possible, with extensions taken from Cyrillic and Greek orthographies. Small-capital letters and some novel diacritics are also used.