9b46c8ee5e9bc0dfd758600b92402d7e09155c01
brianlee
  Wed Jan 22 15:27:27 2020 -0800
Adding a hint about group auto-scale setting being adjustable in terms of opting out subtracks in a composite refs #24770

diff --git src/hg/htdocs/goldenPath/help/hgWiggleTrackHelp.html src/hg/htdocs/goldenPath/help/hgWiggleTrackHelp.html
index 330e535..a7db965 100755
--- src/hg/htdocs/goldenPath/help/hgWiggleTrackHelp.html
+++ src/hg/htdocs/goldenPath/help/hgWiggleTrackHelp.html
@@ -37,31 +37,42 @@
 <ul>
   <li>When viewing signal tracks within a composite group use
   &quot;group auto-scale&quot; to enable having all tracks scaled against the one track
   in the group that has the highest maximum data points in the current view.
   For example, below is a side-by-side image of two views of the same data from a selection
   of cell lines within a composite of related RNA-seq experiments. On the left is the
   original &quot;auto-scale to data view&quot; setting, where each track is auto-scaled
   to appear at each track's highest value. And on the right is the new &quot;group
   auto-scale&quot; setting for the same RNA-seq data where all tracks are scaled against
   the one track in the region that has the highest value (67215 for IMR9 cell TAP + 1).<br>
   <img src="../../images/groupAutoScale.png" width='600' alt="Auto-scale comparison"><br>
   Click this <a href="/cgi-bin/hgTracks?hgS_doLoadUrl=submit&hgS_loadUrlName=http://genome.ucsc.edu/goldenPath/help/examples/sessions/session.autoScale"
   target="_blank">link</a> to interact with the original &quot;auto-scale to data view&quot on
   the left, and to contrast the results with the new &quot;group auto-scale&quot; click this
   <a href="/cgi-bin/hgTracks?hgS_doLoadUrl=submit&hgS_loadUrlName=http://genome.ucsc.edu/goldenPath/help/examples/sessions/session.groupAutoScale"
-  target="_blank">link</a>.</li>
+  target="_blank">link</a>.
+  <li>Note that the &quot;group auto-scale&quot setting is meant to be turned on and off at the
+  composite group track set level, but you can toggle individual tracks. For instance,
+  click the second &quot;group auto-scale&quot; session
+  <a href="/cgi-bin/hgTracks?hgS_doLoadUrl=submit&hgS_loadUrlName=http://genome.ucsc.edu/goldenPath/help/examples/sessions/session.groupAutoScale"
+  target="_blank">link</a> that has all tracks adjusted to
+  the highest value (67215 for IMR9 cell TAP + 1). If you right-click that individual highest track
+  and instead of configuring the track set, select to configure only the subtract IMR9 cell TAP + 1
+  from &quot;group auto-scale&quot; to &quot;auto-scale to data view&quot and select OK
+  and then refresh your browser window (or click one of the &quot;refresh&quot; buttons on the
+  screen) you will see all the tracks adjust to the next-highest track within all tracks
+  still tagged to display &quot;group auto-scale&quot (39320 for IMR9 cell + 1).</li>
 </ul>
 <p> 
 <strong>Vertical viewing range (boxed in red)</strong>: The min and max values specify the vertical portion of 
 the graph that is displayed (default range is 30-70). These numbers can be used to set data 
 threshold indicators. For example, to display only those GC values greater than 50 percent, set 
 the min value to &quot;50&quot;.</p> 
 <p> 
 <strong>Transform function</strong>: Transforms the data points by the function selected in the 
 drop-down menu. Usually the default setting is &quot;None&quot;.</p> 
 <p> 
 <strong>Windowing function</strong>: When a  view is too large to show individual data values, the
 values must be combined to produce a plot point. This option specifies the combining function to 
 be used (default is &quot;Mean&quot;):</p> 
 <ul> 
   <li>