Dotted circle
| ◌ | |
|---|---|
| dotted circle | |
| U+25CC ◌ DOTTED CIRCLE | 
In Unicode, the dotted circle (◌) is a non-significant typographic character used to illustrate the effect of a combining mark, such as a diacritic mark. It can also be used to indicate a spot where a character is supposed to be, but it is rarely used for other purposes.