# Domain Modelling

The purpose of domain modelling in the Isolde project is to produce user documentation for the software in concern.
To this end, the domain modelling refers to specific domains : The User Interface Domain and the Application Domain (these domains are related one to each other). And it features different notions: concepts, instances, and relation.
The domain is also deeply related to the task modelling. There is one-to-one relationship between tasks and instances of domain-action.