From Paul Martz, updated the LOD documentation

include/osg/LOD

@@ -24,13 +24,13 @@ namespace osg {
     the eye point are rendered at a lower level of detail, and at times
     of high stress on the graphics pipeline lower levels of detail can
     also be chosen.
-    The children are ordered from most detailed (for close up views) to the least 
-    (see from a distance), and a set of ranges are used to decide which LOD is used 
-    at different view distances, the criteria used is child 'i' is used when 
-    range[i]<dist<range[i+1] is true. This requires there to be n+1 range values where the number of
-    children is n, since no maximum distance of infinity is assumed.  If the number of range values (m)
-    is insufficient then the children m through to n will be ignored, only 0..m-1 will be used
-    during rendering.
+    Each child has a corresponding valid range consisting of a minimum
+    and maximum distance. Given a distance to the viewer (d), LOD displays
+    a child if min <= d < max. LOD may display multiple children simultaneously
+    if their corresponding ranges overlap. Children can be in any order,
+    and don't need to be sorted by range or amount of detail. If the number of
+    ranges (m) is less than the number of children (n), then children m+1 through
+    n are ignored.
 */
 class OSG_EXPORT LOD : public Group
 {