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+
+/*!
+\ingroup PkgGeneralizedMapsConcepts
+\cgalConcept
+
+The concept `GMapDart` defines a <I>d</I>-dimensional dart for generalized maps. A dart mainly stores handles to the darts linked with itself by \f$ \alpha_i\f$, \f$ \forall\f$<I>i</I>, 0\f$ \leq\f$<I>i</I>\f$ \leq\f$<I>d</I>. Moreover, it stores also handles to each non void attribute associated with itself.
+
+\cgalHeading{Creation}
+
+A dart `d0` is never constructed directly, but always created within a generalized map `gm` by using the method \ref GeneralizedMap::create_dart "gm.create_dart()". A new dart is initialized to be <I>i</I>-free, \f$ \forall\f$<I>i</I>: 0\f$ \leq\f$<I>i</I>\f$ \leq\f$<I>dimension</I>, and having all its attribute handles initialized to `NULL`, for each non `void` attribute.
+
+\cgalHasModel \ref CGAL::GMap_dart "CGAL::GMap_dart<d,GMap>"
+*/
+
+class GMapDart {
+public:
+
+/// \name Constants
+/// @{
+
+/*!
+The dimension of the dart.
+*/
+static unsigned int dimension;
+
+/// @}
+
+/// \name Types
+/// @{
+
+/*!
+%Dart handle type. Must be a model of `Handle` concept.
+*/
+typedef unspecified_type Dart_handle;
+
+/*!
+%Dart const handle type. Must be a model of `ConstHandle` concept.
+*/
+typedef unspecified_type Dart_const_handle;
+
+/*!
+`Attribute_handle<i>::%type` is a handle to `i`-attributes, with 0 \f$ \leq \f$ `i` \f$ \leq \f$ `dimension`. Must be a model of `Handle` concept.
+\note It can be implemented using a nested template class.
+*/
+template <unsigned int i>
+using Attribute_handle = unspecified_type;
+
+/*!
+`Attribute_const_handle<i>::%type` is a const handle to `i`-attributes, with 0 \f$ \leq \f$ `i` \f$ \leq \f$ `dimension`. Must be a model of `ConstHandle` concept.
+\note It can be implemented using a nested template class.
+*/
+template <unsigned int i>
+using Attribute_const_handle = unspecified_type;
+
+/// @}
+
+}; /* end GMapDart */