b4354dab1ce9929f4cd6b81628b545a3b0bd9840
dschmelt
  Wed Feb 26 14:43:22 2020 -0800
Adding note about bigDataIndex keyword #25018

diff --git src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
index c86418e..a490796 100755
--- src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
+++ src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
@@ -1058,18 +1058,26 @@
 <a href="https://help.github.com/" target="_blank">help pages</a>. Please direct any questions about Github
 to their <a href="https://github.com/contact" target="_blank">help desk</a>.
 </p>
 
 <h3>Hosting hubs on figshare</h3>
 <p>
 <a href="https://figshare.com/" target="_blank">Figshare</a> is a site for researchers and institutions to upload
 and collect usage statistics on their data, as well as make their data shareable and discoverable. 
 The process for uploading a hub to Figshare is similar to the process involved at CyVerse, where
 one must first create an account, upload the <em>bigDataUrl</em> files, create shareable links,
 and then edit your <em>hub.txt</em>, <em>genomes.txt</em>, and <em>trackDb.txt</em> appropriately. One advantage to using
 Figshare is their emphasis on usage statistics, so institutional accounts can see how often
 their hubs and tracks are being accessed by others.</p>
 
 <p>
+Note that Figshare does not use filenames as part of the URLs, therefore bigDataUrl files 
+that require a separate index file, like VCFs and BAM files, must have their index file
+location specified with a <em>bigDataIndex</em>. This keyword is relevant for Custom Tracks
+and Track Hubs. You can read more about <em>bigDataIndex</em> in 
+<a href="trackDb/trackDbHub.html#bigDataIndex">the TrackDb Database Definition page</a>.
+</p>
+
+<p>
 For more information on using Figshare, please see their 
 <a href="https://support.figshare.com/support/home" target="_blank">Support Portal</a>.</p>
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