diff --git a/docs/docs/linear_algebra.xml b/docs/docs/linear_algebra.xml
index 61f52aa69..0dcff8409 100644
--- a/docs/docs/linear_algebra.xml
+++ b/docs/docs/linear_algebra.xml
@@ -599,6 +599,7 @@
          <name>2D/3D Geometry</name>
          <item>border_enumerator</item> 
          <item>rectangle</item> 
+         <item>drectangle</item> 
          <item>vector</item> 
          <item>point</item> 
          <item>rotate_point</item> 
@@ -1177,6 +1178,20 @@
 
    <!-- ************************************************************************* -->
 
+      <component>
+         <name>drectangle</name>
+         <file>dlib/geometry.h</file>
+         <spec_file>dlib/geometry/drectangle_abstract.h</spec_file>
+         <description>
+            This object represents a rectangular region inside a Cartesian 
+            coordinate system.  It is very similar to the <a href="#rectangle">rectangle</a>
+            except that it uses double variables instead of longs to represent the location of the rectangle.
+            Therefore, it can position rectangles with sub-pixel accuracy.
+         </description>
+      </component>
+            
+   <!-- ************************************************************************* -->
+      
       <component>
          <name>rectangle</name>
          <file>dlib/geometry.h</file>
diff --git a/docs/docs/term_index.xml b/docs/docs/term_index.xml
index f479238f6..c36c12bc6 100644
--- a/docs/docs/term_index.xml
+++ b/docs/docs/term_index.xml
@@ -202,6 +202,7 @@
          <term file="algorithms.html" name="disjoint_subsets"              include="dlib/disjoint_subsets.h"/>
          <term link="algorithms.html#disjoint_subsets" name="union-find"   include="dlib/disjoint_subsets.h"/>
          <term file="linear_algebra.html" name="rectangle"                 include="dlib/geometry.h"/>
+         <term file="linear_algebra.html" name="drectangle"                 include="dlib/geometry.h"/>
          <term file="linear_algebra.html" name="border_enumerator"         include="dlib/geometry.h"/>
          <term file="graph_tools.html" name="edge"                         include="dlib/graph_utils.h"/>
          <term file="graph_tools.html" name="is_join_tree"                 include="dlib/graph_utils.h"/>