Hi, >OBOS could do something similar, that way, all preferences are >tweakable via a text file, but all applications actually write to / >read from that file via a single daemon interface by BMessages. This is indeed a very powerful approach. Macro N. implemented this once, please take a look at his work on this: http://www.xs4all.nl/ ~marcone/be.html#prefserver Regards, Ithamar.