NAME
Lingua::Thesaurus::RelType - Relation type in a thesaurus
DESCRITION
A RelType object is just a datastructure with the following fields:
- rel_id
 - 
String, unique identifier for this relation type (e.g. 'NT', 'BT', 'RT', etc.)
 - description
 - 
Description string for this relation type
 - inverse_id
 - 
Unique identifier for the reciprocal relation, if any.
 - is_external
 - 
Boolean stating whether the item related to the lead term is another term, or is some external data (for example a "Scope Note").