ACL2_Characters.html -- ACL2 Version 6.3

## ACL2 Characters

ACL2 accepts 256 distinct characters, which are the characters obtained by applying the function `code-char` to each integer from 0 to 255. Among these, Common Lisp designates certain ones as `*standard-characters*`, namely those of the form `(code-char n)` where n is from 33 to 126, together with `#\Newline` and `#\Space`. The actual standard characters may be viewed by evaluating the constant expression `*standard-chars*`.

The standard character constants are written by writing a hash mark followed by a backslash (#\) followed by the character.

The function `characterp` recognizes characters. For more details, See characters .