skins2(doc): update doc to introduce $R (speed rate)

diff --git a/doc/skins/skins2-howto.xml b/doc/skins/skins2-howto.xml
index aaefd5c603f7392cd029f3a368e9ea1d6b78a37f..bd13d5a5a70eb17be13bebaff42b153c9d9a2c4f 100644 (file)
--- a/doc/skins/skins2-howto.xml
+++ b/doc/skins/skins2-howto.xml
@@ -1083,6 +1083,9 @@ difficulty to understand how VLC skins work.</para>
   <listitem><para>
     <emphasis>$V</emphasis>: Value of the volume (from 0 to 100 --> useful for a percentage).
   </para></listitem>
+  <listitem><para>
+    <emphasis>$R</emphasis>: Value of the playback speed rate. Available from VLC 2.0
+  </para></listitem>
   <listitem><para>
     <emphasis>$T</emphasis>: Current time (the output format is H:MM:SS).
   </para></listitem>