\begin{ccRefClass}{Origin} \ccInclude{Origin.h} \ccDefinition \cgal\ defines a symbolic constant \ccStyle{ORIGIN} which denotes the point at the origin. \ccRefName\ is the type of this constant. It is used in the conversion between points and vectors. \ccSeeAlso \ccc{Point_2}, \ccc{Point_3}, \ccc{Vector_2}, \ccc{Vector_3}, \ccc{operator+}, \ccc{operator-} \end{ccRefClass}