Flash MX 2004.
fl.openScript(fileURI )
fileURI A string, expressed as a file:/// URI, that specifies the path of the JSFL, AS, ASC, XML, TXT, or other file that should be loaded into Flash.
Nothing.
Method; opens an existing file or creates a new script (JSFL, AS, ASC) or other file (XML, TXT) in Flash.
The following example opens a file named my_test.jsfl that is stored in the temp directory on the C drive:
fl.openScript("file:///c|/temp/my_test.jsfl");