You want to specify a value as a binary, octal, or hexadecimal number.

Hexadecimal literals start with 0X or 0x (where the first character is a zero, not an “oh”), and octal literals start with 0 (again, zero, not “oh”). Binary numbers can’t be represented directly, but you can specify their octal or hexadecimal equivalent.

You can represent numbers in ActionScript using whichever format is
most convenient, such as decimal or hexadecimal notation. For
example, if you set the value of the
`MovieClip`

`._rotation`

property, it is most convenient to use a decimal number:

myMovieClip._rotation = 180;

On the other hand, hexadecimal numbers are useful for specifying RGB
colors. For example, you can set the RGB value for a
`Color`

object in hexadecimal notation (in this
example, `0xF612AB`

is a hex number representing a
shade of pink):

myColor = new Color(myMovieClip); myColor.setRGB(0xF612AB);

Any numeric literal starting with 0X or 0x is presumed to be a
*hexadecimal number* (a.k.a.
`hex`

or base-16). Allowable digits in a
hexadecimal number are 0-9 and A-F (both uppercase and lowercase
letters are allowed).

Any numeric literal starting with 0, but not 0x or 0X, is presumed to
be an `octal number`

(a.k.a. base-8). Allowable
digits in an octal number are 0-7. For example,
`0777`

is an octal number. Most developers
don’t ever use octal numbers in ActionScript.

The only digits allowed in `binary numbers`

(a.k.a. base-2) are 0 and 1. Although ...

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