An interesting feature of the language is its use of octal numbers.
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Numeric values are encoded in octal numbers using ASCII digits, with leading zeroes.
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It is stored as a six digit octal number with leading zeroes followed by a NUL and then a space.
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An error will result if the argument is not a valid octal number or if it has more than 4 digits.
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Squawk codes are four-digit octal numbers; the dials on a transponder read from zero to seven, inclusive.
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Due to the difficulties to define environment variables containing binary data COMMAND . COM also accepts a special \ nnn notation for octal numbers.
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The TRIM assembly source code used octal numbers as opposed to more common hexadecimal because the 18-bit words are evenly divisible by 3, but not by 4.
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I wouldn't use binary groups of 3 except in special circumstances where octal numbers are very common . talk ) 01 : 18, 28 August 2011 ( UTC)
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The last 3 data bits are a fixed'001', this leaves 9 code bits ( 512 possibilities ) which are conventionally represented as a 3-digit octal number.