⠰

Symbol

 * 1)  The letter marker.
 * 2)  The Grade-1 (uncontracted) braille marker.
 * 3)  A prefix marking various letter sequences:
 * ⠰⠛ -ong, ⠰⠇ -ful, ⠰⠞ -ment, ⠰⠑ -ence, ⠰⠎ -ness, ⠰⠝ -tion, ⠰⠽ -ity
 * 1)  The marker for ALL CAPS
 * 2)  A prefix for mathematical symbols
 * 3)  Marks foreign script
 * 4)  Marks national orthography (once for one letter, doubled for a passage, until ended with ⟨⠰⠆⟩.)

Usage notes

 * Used to indicate that a Braille character stands for its literal value, and not as a digit or word.
 * As a sequence marker, it cannot occur at the beginning of a word.
 * Used to indicate that a Braille character does not stand a sequence ("contraction"); for example, ⠰⠳ clarifies that the ⠳ is an arrow icon rather than the sequence ou.

Punctuation mark

 * 1)  semicolon
 * 2)  semicolon

Letter

 * 1)  anusvara
 * 2)  ṉa      [and maybe Malayalam?]
 * 3)  The rime ong
 * 4)  tone ◌̀
 * 5)  Initial