Eskil, currently, there is only a single comand to set a link from an object node to another node, o_link_set. So, how is a link removed? I think it might make more sense to have two commands, o_link_create and o_link_delete, since the links seem to have IDs and are simply very similiar to other things handled this way (nodes, layers, fragments, and so on). What do you think? /Emil