Make all the \seemodule explanations consistent: start with a capitalized
letter and end with proper punctuation.  "Documenting Python" will be
updated accordingly so that this will be editorial policy for the Python
documentation.
diff --git a/Doc/lib/libarray.tex b/Doc/lib/libarray.tex
index d6f5b5c..1574b1f 100644
--- a/Doc/lib/libarray.tex
+++ b/Doc/lib/libarray.tex
@@ -185,8 +185,10 @@
 
 
 \begin{seealso}
-  \seemodule{struct}{packing and unpacking of heterogeneous binary data}
-  \seemodule{xdrlib}{packing and unpacking of XDR data}
+  \seemodule{struct}{Packing and unpacking of heterogeneous binary data.}
+  \seemodule{xdrlib}{Packing and unpacking of External Data
+                     Representation (XDR) data as used in some remote
+                     procedure call systems.}
   \seetitle[http://numpy.sourceforge.net/numdoc/numdoc.pdf]{The
            Numerical Python Manual}{The Numeric Python extension
            (NumPy) defines another array type; see