Alter

This element alters the properties of an instance of a symbol on the timeline at the specified display depth. A new ratio can be specified for MorphShape or video symbols and Transform and RGBAColorTransform child elements may also be specified. MovieClipActions cannot be specified. A Replace element must be used to specify new MovieClipActions. Existing Transform and RGBAColorTransform elements are unchanged unless explicitly specified.

Alter elements can also take basic transformation attributes. These, in general, should be used in preference to a nested Transform element in situations where the referenced symbol is already defined and the bounds are known. The location of the referenced symbol can be modified with the x and y attributes, the scale of the symbol can be modified using the width and height attributes, and the rotation of the symbol modified using the rotate attribute. Note that when the width and height attributes are used for compound symbols such as MovieClips and Buttons, their bounds are calculated by summing the bounds of all symbols on their timeline or, in the case of buttons, their hit areas.

If it is necessary to specify skew attributes using differing values for rotateX and rotateY, or if it is preferred to specify an absolute transform independent of the altered symbol, then the nested Transform element can be used