Academic research almost without exception involves literature searches.The huge wealth of literature can be sorted using ontologies and eventually an ontologically based system may be able to extract relevant literature for researchs based on some simple queues such as research title or hypothesis.In this paper we introduce an ontology-based digital library system and detail the first component of the system that allows real time flexible ontology management.The flexibility aspect includes the modification of the ontology at any time,as well as full real time graphical representation and editing.We introduce our novel semi-formal representation scheme for ontologies that promotes ontology modifiability and adaptability. Keywords:Otology; representation; flexibility.