regen
diff --git a/man/zip_file_set_comment.html b/man/zip_file_set_comment.html
index 844ca04..9ea7604 100644
--- a/man/zip_file_set_comment.html
+++ b/man/zip_file_set_comment.html
@@ -77,7 +77,8 @@
   <var class="Ar">flags</var> argument can be any of:
 <dl class="Bl-tag">
   <dt><a class="permalink" href="#ZIP_FL_ENC_GUESS"><code class="Dv" id="ZIP_FL_ENC_GUESS">ZIP_FL_ENC_GUESS</code></a></dt>
-  <dd>Guess encoding of <var class="Ar">comment</var> (default).</dd>
+  <dd>Guess encoding of <var class="Ar">comment</var> (default). (Only CP-437
+      and UTF-8 are recognized.)</dd>
   <dt><a class="permalink" href="#ZIP_FL_ENC_UTF_8"><code class="Dv" id="ZIP_FL_ENC_UTF_8">ZIP_FL_ENC_UTF_8</code></a></dt>
   <dd>Interpret <var class="Ar">comment</var> as UTF-8.</dd>
   <dt><a class="permalink" href="#ZIP_FL_ENC_CP437"><code class="Dv" id="ZIP_FL_ENC_CP437">ZIP_FL_ENC_CP437</code></a></dt>
@@ -128,7 +129,7 @@
 </div>
 <table class="foot">
   <tr>
-    <td class="foot-date">December 18, 2017</td>
+    <td class="foot-date">September 22, 2020</td>
     <td class="foot-os">NiH</td>
   </tr>
 </table>