This step of modelling covers the creation of 3D content elements that does not require the use of any additional specific hardware or software for 3D modelling and may be done with a typical semantic editor. However, a visual semantic modelling tool can be developed to further simplify mapping. In comparison to the design of a CrR, mapping is semantically more complex in terms of the structures that need to be created, and it requires more semantice xpressiveness.