\begin{ccRefClass}{Pure_complex_ds_vertex} \ccDefinition The class \ccRefName\ serves as the default vertex template parameter in the class \ccc{Pure_complex_data_structure}. This class does not contain any geometric information but only combinatorial (adjacency) information. Thus, if the \ccc{Pure_complex_data_structure} is used as a parameter of a geometric complex, then its vertex template parameter has to fulfill additional geometric requirements, \emph{i.e.}, it has to be a model of the refined concept \ccc{PureComplexVertex}. This class can be used directly or can serve as a base to derive other classes with some additional attributes tuned for a specific application (a color for example). \ccInclude{CGAL/Pure_complex_ds_vertex.h} \ccParameters The template parameter \ccc{PCDS} must be a model of the \ccc{PureComplexDataStructure} concept. It defaults to \ccc{void}, which is used to break some dependency cycles. \ccIsModel \ccc{PureComplexDSVertex} \ccSeeAlso \ccc{Pure_complex_ds_simplex} \end{ccRefClass}