At the moment, there is no way to explicitly mention the the programmer of an applet as such in the metadata. If I write some example and include an applet in it (maybe even one that was ordered and supervised by myself), then I am the author of this example, i.e., I will encode: <Creator role="aut" xml:lang="de">Christian Groß</Creator> But of course, here also the programmer of the applet has done a considerable part of the overall work of this example. At the moment, I have encoded his/her contribution just via: <Contributor role="clb" xml:lang="de">Rui Dong</Contributor> etc. I think there should be a special new role created for programmers of applets, and I would suggest to use role="app" or role="apl". Once this is done, the programmers can be menioned explicitly, e.g., in the copyright statements, like: Applet: Rui Dong