+void DragBox_Think(entity this);
+float Drag(entity this, float force_allow_pick, float ischeat);
+void Drag_Begin(entity dragger, entity draggee, vector touchpoint);
+void Drag_Finish(entity dragger);
+bool Drag_IsDraggable(entity draggee, entity dragger);
+float Drag_MayChangeAngles(entity draggee);
+void Drag_MoveForward(entity dragger);
+void Drag_SetSpeed(entity dragger, float s);
+void Drag_MoveBackward(entity dragger);
+void Drag_Update(entity dragger);
+float Drag_CanDrag(entity dragger);
+float Drag_IsDragging(entity dragger);
+void Drag_MoveDrag(entity from, entity to);