From 695ff0f3b316ded9725b9b6ebc145bc4d88c6887 Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Tue, 5 Jan 2021 15:39:06 +0000
Subject: [PATCH] Fix doc of Projection_traits_xy_3

---
 Kernel_23/doc/Kernel_23/CGAL/Projection_traits_xy_3.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel_23/doc/Kernel_23/CGAL/Projection_traits_xy_3.h b/Kernel_23/doc/Kernel_23/CGAL/Projection_traits_xy_3.h
index 56b476d9735..63759e8c3ba 100644
--- a/Kernel_23/doc/Kernel_23/CGAL/Projection_traits_xy_3.h
+++ b/Kernel_23/doc/Kernel_23/CGAL/Projection_traits_xy_3.h
@@ -77,7 +77,7 @@ typedef Line_3<K> Line_2;
 A construction object.
 Provides the operator :
 
-`Object_2 operator()(Segment_2 s1, Segment_2 s2);`
+`boost::optional< boost::variant<Point_2,Segment_2> > operator()(Segment_2 s1, Segment_2 s2);`
 which returns a 3D object whose projection on the xy-plane
 is the intersection of the projections of `s1` and `s2`.
 If non empty, the returned object is either a segment or a point.