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| id3 — Property in class Sound | 
 | Provides access to the metadata that is part of an MP3 file. | 
| identity() — Method in class flash.geom.Matrix | 
 | Sets each matrix property to a value that cause a transformed movie clip or geometric construct to be identical to the original. | 
| idMap — Property in class XML | 
 | An object containing the XML file's nodes that have an id attribute assigned. | 
| if — Statement | 
 | Evaluates a condition to determine the next action in a SWF file. | 
| ifFrameLoaded([scene:String], frame:Object) — Global function | 
 | Deprecated since Flash Player 5 — This function has been deprecated. Macromedia recommends that you use the MovieClip._framesloaded property. 
 | 
| ignoreWhite — Property in class XML | 
 | Default setting is false. | 
| IME — Class in package System | 
 | The IME class lets you directly manipulate the operating system's input method   editor (IME) in the Flash Player application that is running on a client computer. | 
| implements — Statement | 
 | Specifies that a class must define all the methods declared in the interface (or interfaces) being implemented. | 
| import — Statement | 
 | Lets you access classes without specifying their fully qualified names. | 
| #include — Compiler Directive | 
 | Includes the contents of the specified file, as if the commands
									in the file are part of the calling script.
				 | 
| indent — Property in class TextFormat | 
 | An integer that indicates the indentation from the left margin to the first character in the paragraph. | 
| index — Property in class Camera | 
 | A zero-based integer that specifies the index of the camera, as reflected in the array returned by Camera.names. | 
| index — Property in class Microphone | 
 | A zero-based integer that specifies the index of the microphone, as reflected in the array returned by Microphone.names. | 
| indexOf(value:String, [startIndex:Number]) — Method in class String | 
 | Searches the string and returns the position of the first occurrence of value found at or after startIndex within the calling string. | 
| Infinity — Constant property | 
 | Specifies the IEEE-754 value representing positive infinity. | 
| -Infinity — Constant property | 
 | Specifies the IEEE-754 value representing negative infinity. | 
| inflate(dx:Number, dy:Number) — Method in class flash.geom.Rectangle | 
 | Increases the size of the Rectangle object by the specified amounts. | 
| inflatePoint(pt:Point) — Method in class flash.geom.Rectangle | 
 | Increases the size of the Rectangle object. | 
| #initclip — Compiler Directive | 
 | Indicates the beginning of a block of initialization actions.
									
				 | 
| initialize(obj:Object) — Static method in class AsBroadcaster | 
 | Adds event notification and listener management functionality to a given object. | 
| initialize() — Static method in class mx.lang.Locale | 
 | Automatically determines the language to use and loads the XML language file. | 
| inner — Property in class flash.filters.DropShadowFilter | 
 | Indicates whether or not the shadow is an inner shadow. | 
| inner — Property in class flash.filters.GlowFilter | 
 | Specifies whether the glow is an inner glow. | 
| INSERT — Constant static property in class Key | 
 | The key code value for the Insert key (45). | 
| insertBefore(newChild:XMLNode, insertPoint:XMLNode) — Method in class XMLNode | 
 | Inserts a newChild node into the XML object's child list, before the insertPoint node. | 
| install(name:String, data:String) — Static method in class CustomActions | 
 | Installs a new custom action XML definition file indicated by the name parameter. | 
| instanceof — Operator | 
 | Tests whether object is an instance of classConstructor or a subclass of classConstructor. | 
| int(value:Number) — Global function | 
 | Deprecated since Flash Player 5 — This function was deprecated in favor of Math.round(). 
 | 
| interface — Statement | 
 | Defines an interface. | 
| interpolate(pt1:Point, pt2:Point, f:Number) — Static method in class flash.geom.Point | 
 | Determines a point between two specified points. | 
| intersection(toIntersect:Rectangle) — Method in class flash.geom.Rectangle | 
 | If the Rectangle object specified in the toIntersect parameter intersects with this Rectangle object, the  intersection() method returns the area of intersection as a Rectangle object. | 
| intersects(toIntersect:Rectangle) — Method in class flash.geom.Rectangle | 
 | Determines whether the object specified in the toIntersect parameter intersects with this Rectangle object. | 
| intrinsic — Statement | 
 | Allows compile-time type checking of previously defined classes. | 
| invert() — Method in class flash.geom.Matrix | 
 | Performs the opposite transformation of the original matrix. | 
| isAccessible() — Static method in class Key | 
 | Returns a Boolean value indicating, depending on security restrictions, whether the last key pressed may be accessed by other SWF files. | 
| isActive() — Static method in class Accessibility | 
 | Indicates whether an accessibility aid is currently active and the player is communicating with it. | 
| isDebugger — Static property in class System.capabilities | 
 | A Boolean value that indicates whether the player is an officially released version (false) or a special debugging version (true). | 
| isDown(code:Number) — Static method in class Key | 
 | Returns true if the key specified in keycode is pressed; false otherwise. | 
| isEmpty() — Method in class flash.geom.Rectangle | 
 | Determines whether or not this Rectangle object is empty. | 
| isFinite(expression:Object) — Global function | 
 | Evaluates expression and returns true if it is a finite number or false if it is infinity or negative infinity. | 
| isNaN(expression:Object) — Global function | 
 | Evaluates the parameter and returns true if the value is NaN (not a number). | 
| isPropertyEnumerable(name:String) — Method in class Object | 
 | Indicates whether the specified property exists and is enumerable. | 
| isPrototypeOf(theClass:Object) — Method in class Object | 
 | Indicates whether an instance of the Object class is in the prototype chain of the object specified as an argument. | 
| isToggled(code:Number) — Static method in class Key | 
 | Returns true if the Caps Lock or Num Lock key is activated (toggled to an active state); false otherwise. | 
| italic — Property in class TextFormat | 
 | A Boolean value that indicates whether text in this text format is italicized. | 
 |