this highlight that in the comparison that `got tag' makes annotated
tags.  git tag instead defaults to lightweight tags.

diff /home/op/w/got-www
commit - b183145b65deab64768d0fcab787025a68b43679
path + /home/op/w/got-www
blob - c624271c78e7faa14e2cdcf05f742eb87a01e741
file + comparison.html
--- comparison.html
+++ comparison.html
@@ -174,7 +174,7 @@ The table below lists some commonly used commands and 
 <td><code><a href="got.1.html#tag">got tag</a></code>
 <td><code>cvs tag</code>
 <td><code>svn copy</code>
-<td><code>git tag</code>
+<td><code>git tag -a</code>
 <tr>
 <td><code><a href="got.1.html#fetch">got fetch</a></code>
 <td><code>cvsync</code> / <code>reposync</code>