Digital image codingdecoding apparatus using watermarking, and methods thereof are provided. Some embodiments of the invention archive and unarchive objects that have global and user settings in multi-user environments. A write barrier is provided for detecting that said the first object has been updated by a program to include a first reference to a memory location in the second heap. Network conditions may be determined by transmission of monitor or data packets and may be determined at either or both of the sending or receiving nodes and the optimum packet size and inter-packet interval are determined by a fuzzy logic analyzer, a neural network analyzer or a combined fuzzy logicneural network analyzer. This invention further provides methods of treating an autoimmune encephalitis or an epilepsy, comprising the steps of detecting an antibody to a GABAB receptor and treating a tumor associated with the disease. When it is determined that the window image does not correspond to a human face, discrimination by lower nodes is not performed, and discrimination proceeds to sibling nodes.