diff --git a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
index f9e3089c64a..4e1352555ee 100644
--- a/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
+++ b/Boolean_set_operations_2/doc/Boolean_set_operations_2/Boolean_set_operations_2.txt
@@ -23,8 +23,8 @@ Figure \ref figteaser shows simple examples of such operations.
 
 Ordinary Boolean set-operations, which distinguish between the
 interior and the boundary of a polygon, are not implemented within this
-package. The `Nef_2` package supports these operations for (linear)
-polygons; see Chapter \ref chapnef_2.
+package. The Chapter \ref chapnef_2 "2D Nef Polygons` supports these operations for (linear)
+polygons.
 
 In the rest of this chapter we use, unless otherwise stated, the
 traditional notation to denote regularized operations; e.g., \f$ P \cap Q\f$
diff --git a/Documentation/doxyassist.xml b/Documentation/doxyassist.xml
index 71077baee49..644639c90ea 100644
--- a/Documentation/doxyassist.xml
+++ b/Documentation/doxyassist.xml
@@ -631,6 +631,9 @@ namespace for the XML file to be processed properly.  -->
           <string name="GENERATE_TAGFILE">./tags/Boolean_set_operations_2.tag</string>
           <string name="IMAGE_PATH">../Boolean_set_operations_2/doc/Boolean_set_operations_2/fig</string>
           <string name="EXAMPLE_PATH">../Boolean_set_operations_2/examples</string>
+          <list name="TAGFILES" append="true">
+            <item>./tags/Nef_2.tag=../../CGAL.CGAL.2D-Boolean-Operations-on-Nef-Polygons/html</item>
+          </list>
         </doxygen>
       </project>