[SYMBOL][A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][X][Y][Z]<noscript> tags , (commas) in displayed numbers += (add-by-value operators) 2nd + (addition operators) 2nd < > (angle brackets) in CSS = (assignment operators) \b (backspace) \r (carriage return) { } (curly braces) 2nd 3rd # (delimiter character) ? (delimiter character) \\ (double backslashes) " (double quote) = = (equality operators) 2nd browser version detection Internet Explorer versioning and >= (greater-than or equals operators)browser version detection Internet Explorer versioning and # (hash marks) and ID selectors != (inequality operators) < (less-than operators) <= (less-than or equal operators) \n (newline) \r\n (newline) ( ) (parentheses) and functions ' (single quote) [ ] (square brackets) = = = (strict equality operators) 2nd !== (strict inequality operators)