 The \(X\) and \(Z\) properties that are so associated need not exhaust the properties that \(X\) instantiates, nor do all possible \(Z\) properties need be associated with an \(X\) property. A scientific model can then be defined as a \(Z\)-representation, i.e., an object under an interpretation. This notion of a model explicitly does not presuppose a target system and hence makes room for targetless models. Models can then be seen as instantiating \(Z\)-properties under the relevant interpretation, which explains how the model can exemplify such properties.