Information retrieval/handling
   Knowledge-based IR/H tool
   Classic IR/H tool (e.g. grep)

Document element indexation
   Index DEs with knowledge
   Set relations between DEs

Knowledge editors
   CG textual editor
   CG graphic editor: WebKB-GE

Knowledge browsers
   for hierarchical relationships
       for concept types Isa hierarchy
       for relation types Isa hierarchy

Knowledge repositories
   Top-level concept/relation types
   Examples of storage
       in HTML files
       Knowledge/documentation mix
       Small base of images
       Interview and its indexation
       road accident ontology
       KADS1 ontology
       Scripts: scr.html, whatIs.html