Hey Jarl; I just read your message and your mention of taking a look at the code. You might want to wait for a couple of days because we are in the middle of a major rewrite (we are separating the gui from the rest of the code) which is nearly done, but is not reflected very well in the snapshot. Hopefully we can then get a new snapshot you can take a look at that will give you a better estimation of the design of Loci. Brad