• overcome ISIS limitations in storage capacity and expressiveness;
  • add full Unicode support;
  • scale to meet the needs from small users to large data providers;
  • ease the coupling between digital libraries and external software systems.
  • facilitate software maintenance, by keeping as much as possible a shared, portable (hardware independence), multi-platform (operating system independence) code base to decrease maintenance costs and increase robustness;
  • reach equal or better performance than classic ISIS tools
  • improve indexing and data acquisition capabilities;
  • move towards a model that can accommodate XML documents as well.