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Reference
fsTextArea adds the methods below to the TextArea from Macromedia. Please note that insert and getSelection() do not work properly with HTML enabled.
undo()
un-does the last writing, deleting or inserting action redo()
recovers the last undone action insert(txt:String,"front" or "end" or "selection":String)
inserts txt at the position defined in argument 2 getSelection()
returns the currently selected text
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