diff --git a/apps/opencs/view/render/cell.cpp b/apps/opencs/view/render/cell.cpp
index c74782f2d1..a1f3c0c41f 100644
--- a/apps/opencs/view/render/cell.cpp
+++ b/apps/opencs/view/render/cell.cpp
@@ -612,6 +612,25 @@ osg::ref_ptr<CSVRender::TagBase> CSVRender::Cell::getSnapTarget(unsigned int ele
     return result;
 }
 
+void CSVRender::Cell::selectFromGroup(const std::vector<std::string> group)
+{
+    for (const auto& [_, object] : mObjects)
+        if (auto found = std::ranges::find_if(group.begin(), group.end(),
+                [&object](const std::string& id) { return object->getReferenceId() == id; });
+            found != group.end())
+            object->setSelected(true, osg::Vec4f(1, 0, 1, 1));
+}
+
+void CSVRender::Cell::unhideAll()
+{
+    for (const auto& [_, object] : mObjects)
+    {
+        osg::ref_ptr<osg::Group> rootNode = object->getRootNode();
+        if (rootNode->getNodeMask() == Mask_Hidden)
+            rootNode->setNodeMask(Mask_Reference);
+    }
+}
+
 std::vector<osg::ref_ptr<CSVRender::TagBase>> CSVRender::Cell::getSelection(unsigned int elementMask) const
 {
     std::vector<osg::ref_ptr<TagBase>> result;
diff --git a/apps/opencs/view/render/cell.hpp b/apps/opencs/view/render/cell.hpp
index cf50604c29..52e01c631a 100644
--- a/apps/opencs/view/render/cell.hpp
+++ b/apps/opencs/view/render/cell.hpp
@@ -148,6 +148,10 @@ namespace CSVRender
         // already selected
         void selectAllWithSameParentId(int elementMask);
 
+        void selectFromGroup(const std::vector<std::string> group);
+
+        void unhideAll();
+
         void handleSelectDrag(Object* object, DragMode dragMode);
 
         void selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode);