There are two export options available from the Library :
Library / Export buttons
|•||Export Media renders and exports a composition to a chosen file format (DPX, TIFF, MXF etc.).|
|•||Export Composition exports the active composition as a list file e.g. an EDL|
Version 2014.1 also lets you export to an AAF composition via ..Export Media. This requires the composition you export as AAF to have been created from an AAF.