A string is any group of characters beginning and ending with a quote (`) or double quote (") delimiter. The same delimiter must be used at both ends of the string. To include the delimiter character in the string, use a double-delimiter sequence (` ` or ""). For example:
The value of a string is the string itself. The number of characters in the string is called its length. If the string does not contain any characters, it is called a null string.
Strings that are followed by an X or B character are classified as hex or binary strings, respectively, and must be composed of hexadecimal digits (0-9, A-F) or binary digits (0,1). For example:
Blanks are permitted at byte boundaries to improve readability. Hex and binary strings are convenient for specifying non-ASCII characters and machine-specific information, like addresses. They are converted immediately to the packed (machine-compressed) internal form.
