Flash MX 2004.
document.accName
Property; a string that is equivalent to the Name field in the Accessibility panel. Screen readers identify objects by reading the name aloud.
The following example sets the accessibility name of the document to "Main Movie":
fl.getDocumentDOM().accName = "Main Movie";
The following example gets the accessibility name of the document:
fl.trace(fl.getDocumentDOM().accName);