Convert several \seetext references to \seerfc and \seetitle versions.
These format somewhat better and include more semantic information in the
source.
diff --git a/Doc/lib/libbase64.tex b/Doc/lib/libbase64.tex
index b608a8a..24525d1 100644
--- a/Doc/lib/libbase64.tex
+++ b/Doc/lib/libbase64.tex
@@ -52,9 +52,9 @@
 \begin{seealso}
   \seemodule{binascii}{Support module containing \ASCII{}-to-binary
                        and binary-to-\ASCII{} conversions.}
-  \seetext{Internet \rfc{1521}, \emph{MIME (Multipurpose Internet
-           Mail Extensions) Part One: Mechanisms for Specifying and
-           Describing the Format of Internet Message Bodies}, section
-           5.2, ``Base64 Content-Transfer-Encoding,'' provides the
-           definition of the base64 encoding.}
+  \seerfc{1521}{MIME (Multipurpose Internet Mail Extensions) Part One:
+          Mechanisms for Specifying and Describing the Format of
+          Internet Message Bodies}{Section 5.2, ``Base64
+          Content-Transfer-Encoding,'' provides the definition of the
+          base64 encoding.}
 \end{seealso}