I am trying to build a Jar from a module using Build->"Build Jars". I need to include/add properties to the generated MANIFEST.MF file. Ideally I would like to be able to use the Add button from the "Include in Jar" section of the Build Jars dialog box, however, this does not allow me to add the MANIFEST.MF file as I would have expected. Is this expected behavior? If so, what is the correct way of going about adding/setting properties in the generated MANIFEST.MF file in this case? I am using IDEA 8.1. Thanks.