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| _x — Property in class Button | 
 | An integer that sets the x coordinate of a button relative to the local coordinates of the parent movie clip. | 
| _x — Property in class MovieClip | 
 | An integer that sets the x coordinate of a movie clip relative to the local coordinates of the parent movie clip. | 
| _x — Property in class TextField | 
 | An integer that sets the x coordinate of a text field relative to the local coordinates of the parent movie clip. | 
| _x — Property in class Video | 
 | Indicates the x coordinate of a Video object relative to the local coordinates of the parent movie clip. | 
| x — Property in class flash.geom.Point | 
 | The horizontal coordinate of the point. | 
| x — Property in class flash.geom.Rectangle | 
 | The x coordinate of the top-left corner of the rectangle. | 
| XML — Class in Top Level | 
 | Use the methods and properties of the XML class to load, parse, send, build, and manipulate XML document trees. | 
| XML(text:String) — Constructor in class XML | 
 | Creates a new XML object. | 
| xmlDecl — Property in class XML | 
 | A string that specifies information about a document's XML declaration. | 
| XMLNode — Class in Top Level | 
 | An XML document is represented in Flash by the XML class. | 
| XMLNode(type:Number, value:String) — Constructor in class XMLNode | 
 | The XMLNode constructor lets you instantiate an XML node based on a string specifying its contents and on a number representing its node type. | 
| XMLSocket — Class in Top Level | 
 | The XMLSocket class implements client sockets that let the computer running Flash Player communicate with a server computer identified by an IP address or domain name. | 
| XMLSocket() — Constructor in class XMLSocket | 
 | Creates a new XMLSocket object. | 
| XMLUI — Class in Top Level | 
 | The XMLUI object enables communication with SWF files that are used as custom user interfaces for the flash authoring tool's extensibility features (such as Behaviors, Commands, Effects, and Tools). | 
| _xmouse — Property in class Button | 
 | Returns the x coordinate of the mouse position relative to the button. | 
| _xmouse — Property in class MovieClip | 
 | Returns the x coordinate of the mouse position. | 
| _xmouse — Property in class TextField | 
 | Returns the x coordinate of the mouse position relative to the text field. | 
| _xmouse — Property in class Video | 
 | Indicates the x coordinate of the mouse position. | 
| _xscale — Property in class Button | 
 | The horizontal scale of the button as applied from the registration point of the button, expressed as a percentage. | 
| _xscale — Property in class MovieClip | 
 | Determines the horizontal scale (percentage) of the movie clip as applied from the registration point of the movie clip. | 
| _xscale — Property in class TextField | 
 | Determines the horizontal scale of the text field as applied from the registration point of the text field, expressed as a percentage. | 
| _xscale — Property in class Video | 
 | Indicates the horizontal scale (percentage) of the Video object as applied from the registration point of the Video object. | 
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