@@ 4,7 4,8 @@ Showlabels
 Put the names of `\labels` and other commands into the margins of a draft
 document.
 
-Version @VERSIONX@, @RELEASEDATE@, http://purl.org/nxg/dist/showlabels.
+Version @VERSIONX@, @RELEASEDATE@;
+<http://purl.org/nxg/dist/showlabels>.
 
 This class option helps you keep track of all the labels in your
 documents, by putting the name of the new label into the margin

          
@@ 23,9 24,14 @@ As well, you can have the arguments to o
 displayed. This is fairly obviously useful for the `\cite` command, but
 it can be useful for `\ref` or `\begin` as well.
 
-The source code for the package is maintained at
-[code.nxg.name](https://code.nxg.name/nxg/tex/showlabels).  This site
-does not currently include an issue tracker (just mail me).
+Links:
+
+  * Canonical software home page: <http://purl.org/nxg/dist/showlabels>
+    (use this rather than the URL it redirects to).
+  * On CTAN: <https://www.ctan.org/pkg/showlabels>
+  * The source code for the package is maintained at
+    [code.nxg.name](https://code.nxg.name/nxg/tex/showlabels).
+    This site does not currently include an issue tracker (just mail me).
 
 This work is Copyright @COPYRIGHTYEARS@, Norman Gray, and may be
 distributed and/or modified under the conditions of the LaTeX Project