The guide makes the following assumptions:
If working with Chinese, you are familiar with the encoding and character sets (Traditional versus Simplified, Big5, GBK, and so on).
If working with Chinese, Japanese, or Thai, you know that these languages do not use white space to delimit words.
If working with Japanese, you are familiar with the shift_jis variants and how the same character can represent either the Yen symbol or the backslash character.