From 73c78729c0282d4262e0d2b8731ecb29d83ea03d Mon Sep 17 00:00:00 2001
From: Andreas Fabri <andreas.fabri@geometryfactory.com>
Date: Tue, 2 Dec 2025 13:41:52 +0000
Subject: [PATCH] Add a doxygen group for IO classes

---
 HDVF/doc/HDVF/PackageDescription.txt        | 3 +++
 HDVF/include/CGAL/HDVF/Cub_object_io.h      | 2 +-
 HDVF/include/CGAL/HDVF/Surface_mesh_io.h    | 2 +-
 HDVF/include/CGAL/HDVF/Triangulation_3_io.h | 2 +-
 4 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/HDVF/doc/HDVF/PackageDescription.txt b/HDVF/doc/HDVF/PackageDescription.txt
index 4379c79e4e2..54060394da9 100644
--- a/HDVF/doc/HDVF/PackageDescription.txt
+++ b/HDVF/doc/HDVF/PackageDescription.txt
@@ -10,6 +10,9 @@
 /// \defgroup PkgHDVFTraitsClasses Traits Classes
 /// \ingroup PkgHDVFRef
 
+/// \defgroup PkgHDVFIOClasses IO Classes
+/// \ingroup PkgHDVFRef
+
 
 /*!
 \cgalPkgDescriptionBegin{HDVF,PkgHDVF}
diff --git a/HDVF/include/CGAL/HDVF/Cub_object_io.h b/HDVF/include/CGAL/HDVF/Cub_object_io.h
index 57740928e3b..79d0ab29973 100644
--- a/HDVF/include/CGAL/HDVF/Cub_object_io.h
+++ b/HDVF/include/CGAL/HDVF/Cub_object_io.h
@@ -32,7 +32,7 @@ typedef std::vector<size_t> IOCubCellType ;
 typedef std::vector<IOCubCellType> IOCubChainType ;
 
 /*!
- \ingroup PkgHDVFRef
+ \ingroup PkgHDVFIOClasses
  The class `Cub_object_io` is an intermediate %IO class, used to load binary volumes and produce cubical complexes.
 
  */
diff --git a/HDVF/include/CGAL/HDVF/Surface_mesh_io.h b/HDVF/include/CGAL/HDVF/Surface_mesh_io.h
index 1675f34e455..179b63b178e 100644
--- a/HDVF/include/CGAL/HDVF/Surface_mesh_io.h
+++ b/HDVF/include/CGAL/HDVF/Surface_mesh_io.h
@@ -27,7 +27,7 @@ namespace Homological_discrete_vector_field {
 
 
 /*!
- \ingroup PkgHDVFRef
+ \ingroup PkgHDVFIOClasses
 
  The class `Surface_mesh_io` is an intermediate %IO class, used to load a triangle mesh and produce simplicial complexes.
 \tparam TriangleMesh a model of `FaceGraph` and `HalfedgeGraph` concepts, e.g., a `CGAL::Surface_mesh`.
diff --git a/HDVF/include/CGAL/HDVF/Triangulation_3_io.h b/HDVF/include/CGAL/HDVF/Triangulation_3_io.h
index bea2fe1699a..f67fc6f90c6 100644
--- a/HDVF/include/CGAL/HDVF/Triangulation_3_io.h
+++ b/HDVF/include/CGAL/HDVF/Triangulation_3_io.h
@@ -27,7 +27,7 @@ namespace Homological_discrete_vector_field {
 
 
 /*!
- \ingroup PkgHDVFRef
+ \ingroup PkgHDVFIOClasses
 
  The class `Triangulation_3_io` is an intermediate %IO class, used to load a `Triangulation_3` and produce simplicial complexes. The class loads the vertices and the cells (ie. tetrahedra) of the `Triangulation_3` into a `Mesh_object_io`.
 \tparam Triangulation3 a model of  `CGAL::Triangulation_3`.