Latin Capital Letter A With Double Grave
HTML Entity Browser Test:

U+0200 is the Unicode hex value of the character Latin Capital Letter A With Double Grave, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

In addition, U+0200 is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+0200
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Decomposition Mapping 0041 030F
Mirrored N
Lowercase Version U+0201
Unicode Character Encodings
Latin Capital Letter A With Double Grave HTML Entity Ȁ (decimal entity), Ȁ (hex entity)
Windows Key Code Alt 0512 or Alt +02001
Programming Source Code Encodings Python hex: u"\u0200", Hex for C++ and Java: "\u0200"
UTF-8 Hexadecimal Encoding 0xC880
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 0512) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +0200) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Latin Capital Letter A With Double Grave character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.