A character with the General Category of Letter (L), Combining Mark (M), Number (N), Punctuation (P), Symbol (S), or Space Separator (Zs).

• Graphic characters specifically exclude the line and paragraph separators (Zl, Zp), as well as the characters with the General Category of Other (Cn, Cs, Cc, Cf).
• The interpretation of private-use characters (Co) as graphic characters or not is determined by the implementation.