3.2 Definitions and rules
- Context of an element : The context of an element
E2 is an element E1 on which E2 depends semantically. In
other words, if a node E2 is a child of a node E1, the term
E2 has to be interpreted in the scope of E1's meaning.
- Similar (Dissimilar) links : Two elements are similar
if they are equivalent or synonymous. Two elements are
dissimilar if they are homonym or disjoint.