Update to the Big Clock, a bit more information and links

include/big-clock.html

@@ -1,20 +1,40 @@
-<h2>The Big Clock</h2>
+<figure>
+  <img src="/images/bigclock.png" style="width:50%;" alt="The big clock">
+  <figcaption>
+    The Big Clock, in Bars:Beats mode
+  </figcaption>
+</figure>
 
 <p>
-  To show the current playhead position in a big, resizable window, activate
-  <kbd class="menu">Window &gt; Big Clock</kbd>. The big clock is very useful
-  when working away from the screen but still wanting to see the playhead
-  position clearly (such as when working with a remote control device across
-  a room). The big clock will change its visual appearance to indicate when active
-  recording is taking place. Below on the left is a screenshot showing a fairly
-  large big clock window filling a good part of the display, and on the right,
-  the same clock during active recording.
+  The <dfn>Big Clock</dfn> is a copy of the main <a 
+  href="@@transport-clocks">primary transport clock</a>, in its 
+  own window, and is activated by checking <kbd class="option">Window 
+  &gt; Big Clock</kbd>.
 </p>
 
+<p>
+  The window is always on top of other windows (Ardour or others), 
+  fully resizable and the clock will always fill the window, making it 
+  very useful when working away from the screen but still wanting to 
+  see the playhead position clearly (such as when working with a remote 
+  control device across a room), or when showing the time on its own 
+  screen. 	
+</p>
+
+<p>
+  Like most other clocks, it can be <kbd 
+  class="mouse">right</kbd>-clicked to change its <a 
+  href="@@editing-clocks#clock-modes">clock mode</a>. It can also be <a 
+  href="@@editing-clocks">edited</a> to transport the playhead to a 
+  specific point in time. The big clock will also change its visual 
+  appearance to indicate when active recording is taking place, by 
+  changing color.
+</p>
+
+
 <figure>
-  <a href="/images/bigclock.png"><img src="/images/bigclock.png" height="100" alt="The big clock filling a screen"></a>
-  <a href="/images/bigclock-recording.png"><img src="/images/bigclock-recording.png" height="100" alt="The big clock while recording"></a>
+  <img src="/images/bigclock-recording.png" style="width:50%;" alt="The big clock, recording">
   <figcaption>
-    The Big Clock, with no transport rolling (left) and recording (right).
+    The Big Clock, in Minutes:Seconds mode, while recording
   </figcaption>
-</figure>
+</figure>