Hello!
In the book "How JavaScript Works" there is a mistake on page 22.9.
There are not 32 control characters.
There are 33 7-bit ASCII control characters and 65 Unicode control characters.
json.org also needs to be fixed.
Wikipedia for reference:
https://en.wikipedia.org/wiki/List_of_Unicode_characters#Control_codes
https://en.wikipedia.org/wiki/Control_character#In_ASCII