<font color="#29313b">This model has been designed to be able to be used in textual only or textual/spatial situations, however it is recommended that spatial presentation is provided.</font><br/><font color="#29313b">A common problem with a textual only environment is that spatial relationships are inappropriately approximated (e.g. hierarchies of regions are created, where the region boundaries don’t match). [Hay]</font><br/><font color="#29313b">Figs 2a and 2b show examples of binary spatial relationships for simple point, line and region geometries [OGIS], [Clementini], [Egenhofer], [JTS]. Readers who wish to learn more about this topic should consult these references.</font><br/><font color="#29313b">If locations are to be related using associations, then the associations should match the spatial binary interactions (e.g. as an association type).</font><br/>(see Figure L.02a – Binary Topological Relationship Examples (1) and Figure L.02b – Binary Topological Relationship Examples (2) below)<br/><br/>
