2.1 The Input Alphabet

The T3X compiler expects its input in the form of an ASCII file (a sequence of octets where the least significant seven bits of each octet contain the ASCII code of one character and the high bit is set to zero). The following characters will be treated as white space (The C-style 0x-notation is used to represent hexa-decimal numbers):

• blank (0x20)
• horizontal tab (0x09)
• line feed (0x0A)
• carriage return (0x0D)
• form feed (0x0C)

White space characters delimit tokens, but will otherwise be ignored by the compiler.

Valid input characters are the upper and lower case alphabetic characters A-Z, a-z, the decimal digits 0-9, and the following special characters:

! " # % & ( ) * + , - . / : ; < = > @ [ \ ] ^ _ | ~

Characters which are not contained in this alphabet may only occur in string literals, character literals, and comments. Otherwise they will cause an error.