⠐⠂

Letter

 * 1)  the letter ⟨ˑ⟩ (the half-long symbol) of the International Phonetic Alphabet

Etymology
The comma, ⠂

Punctuation mark

 * 1)  The ditto mark

Usage notes
Only one of these is used per line.

Synonyms

 * in Unified English Braille

Punctuation mark

 * 1)  The colon