One of the most relevant features of the CiaoPP system is that it allows the addition of new analysis domains to the abstract interpretation-based framework in an easy way.
The next Chapter (Domain Interface for Defining Abstract Domains) describes the module domains.pl, the general interface used by the analyzer for accessing the operations of the different domains implemented in the system. The developer of a new domain must edit this module, adding the necessary clauses to link the general interface with the specific operations of the new domain.
The procedure of adding a new domain is illustrated in gr: simple groundness (abstract domain) by means of a simple abstract domain for groundness information inference. It includes a list of the predicates that need to be implemented by the developer in order to add the abstract domain to CiaoPP.