: Unicode character recognition.

Unicode character information

Combining ring overlay

Displayed on your computer as:
(if the character is not rendered properly, you may not have the appropriate fonts)

Unicode name: Combining ring overlay
Alternative names: Codepoint (hexadecimal): 0x20D8
Codepoint (decimal): 8408
In unicode block: Combining Diacritical Marks for Symbols

Html entities:

⃘ or ⃘

Character input:

There is no universal input system for Unicode characters. But you can use the system specific input methods below.

WindowsHold down Alt and press + on the numeric keyboard. Type: 20D8 and release Alt. A registry key needs to be enabled for this to work. See Unicode input (wikipedia) for more details.
Linux: Hold down Crtl and ⇧ Shift and type U20D8. Now press ↵ Enter and release Crtl and ⇧ Shift.

Other Infos:

General category: Mn (Nonspacing_Mark): A nonspacing combining mark (zero advance width).
Bidirectional class is: NSM (Nonspacing_Mark): Any nonspacing mark.
Canocial combining class is: 1 (Overlay): Marks which overlay a base letter or symbol.