How to Create a New Fact

The first stage in creating a new fact is to determine its position within the existing fact hierarchy.

• If the new fact has no parents in the existing hierarchy you will typically choose the Entity node and click on the Add New Child Fact button.

The Entity fact is used to represent concepts that have physical realisations, like objects and commodities. Where this is not appropriate the ZEUS fact hierarchy also has a fact called Abstract that does not possess cardinality and value attributes.

• If the new fact inherits from an existing fact, select the parent node and click on the Add New Child Fact" button.

• Alternatively, to make the new fact share the same parent as another, (a useful short cut), select the existing fact and click the Add New Peer Fact button.

A new entry will now appear in the fact tree, double click on it and rename to whatever is appropriate.