The VHG philosophy and architecture allows these glossaries to be combined without undue expense, on the assumption that curators know their own glossary well and have a pride in it. Entailment is provided by the seeAlso dataCategory. Each termEntry has an id which is mnemonic in this case, but can be any unique identifier within the glossary. The id forms the target for the end of the seeAlso link. We can represent this small section graphically as shown in the directed graph below.
Entailment is syntactically mono-directional.
These are often described with terms such as broader term, partitive concept, etc. which have precise and specialist meanings. The VHG supports these, but we shall not emphasise them in this introduction. There are two ways of approaching this, both of which are supported by the VHG. require each term to have a primary parent. The VHG would support the former automatically and the second could be displayed or edited with appropriate software. Impose no structure and describe all relationships by links.