- HTML5
(I)(I)- C
\u0028\u0049\u0029 (C99)\U000028\U000049\U000029 (C99)\x28\x49\x29 (encoding-dependent)\050\111\051 (encoding-dependent)- C++
\u{28}\u{49}\u{29} (C++23)\x{28}\x{49}\x{29} (C++23, encoding-dependent)\o{050}\o{111}\o{051} (C++23, encoding-dependent)\U00000028\U00000049\U00000029\u0028\u0049\u0029\x28\x49\x29 (encoding-dependent)\050\111\051 (encoding-dependent)- Java
\u0028\u0049\u0029- JavaScript
\u{28}\u{49}\u{29}\u0028\u0049\u0029\x28\x49\x29- CSS
\28\49\29\000028\000049\000029- Quoted-Printable
=28=49=29- URL
%28%49%29