Xerox 6180N Using LCDS Print Description Language - Page 36

PDL principles and procedures Constant EBCDIC Octal Table 1-2. Types of string constants (Continued) Definition Example EBCDIC constants are used for value and string constants. They must be preceded by the characters E apostrophe (E') and followed by an apostrophe character ('). The EBCDIC string type allows hexadecimal representation of characters to be embedded in a character string. This is done by preceding the hexadecimal representation of the character with an ! character. Each character represented in EBCDIC results in one byte. Each three character sequence representing a character hexadecimally results in one byte. NOTE: If no character type is specified, EBCDIC is the default. IDEN PREFIX='DJDE'; TABLE CONSTANT='ABCDE'; IDEN PREFIX=E'ABC!C4EFG' is equivalent to the hexadecimal IDEN PREFIX=X'C1C2C3C4C5C6C7' Octal constants should be used only as string constants because of the control program conversion process. Each octal character results in three bits. Each octal character pair is converted internally to an 8 bit octal character by prefixing two binary zeros. Thus, the arithmetic value of a multiple character octal constant may be difficult to determine, because each digit in the constant has been altered. An octal constant must be preceded immediately by the characters letter O apostrophe (O') and immediately followed by the apostrophe (') character. RECORD CONSTANT=O'07070707' 1-10 Using LCDS Print Description Language