x0300

x0300 commonly refers to the Unicode code point U+0300, named Combining Grave Accent. It is a non-spacing (combining) diacritical mark used to place a grave accent over the preceding base character in many Latin-script orthographies. As a combining mark, it does not stand alone; its visual effect depends on the base character that precedes it in the text. In many contexts, x0300 is shorthand for the hexadecimal representation of this code point.

In Unicode, U+0300 resides in the Combining Diacritical Marks block and has the general category Mn (Mark, Nonspacing). It is used together with base letters to produce accented forms, such as a plus U+0300 yielding à when rendered with appropriate fonts. If a precomposed character exists (for example à as U+00E0), Unicode normalization can convert between the composed form and the decomposed form (NFC versus NFD).

For data entry and encoding, U+0300 can be inserted directly as the code point, or via numeric character references in markup or text, such as ̀ (hex) or ̀ (decimal). Rendering of the combining grave accent depends on the font, rendering engine, and the surrounding characters; some environments may render diacritics differently or require additional combining marks to achieve the intended diacritic effects.

See also: other combining marks such as U+0301 (Combining Acute Accent) and U+0308 (Combining Diaeresis).