bb741d3e5dfe3fcc576bbe2b84080c78d1f2bc1b
dschmelt
  Wed Nov 20 11:43:03 2019 -0800
Removed period #24490

diff --git src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
index 19ac6f1..4462edf 100755
--- src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
+++ src/hg/htdocs/goldenPath/help/hgTrackHubHelp.html
@@ -188,31 +188,31 @@
 <p>
 This section provides a step-by-step description of the process used to set up a track hub on your 
 own server.</p>
 <p>
 To create your own hub you will need:</p> 
 <ul>
   <li>
   one or more data sets formatted in one of the compressed binary index formats supported by the 
   Genome Browser: bigBed, bigBarChart, bigGenePred, bigNarrowPeak, bigPsl, bigChain, bigInteract,
   bigMaf, bigWig, BAM, CRAM, HAL, hic or VCF</li>
   <li>
   a set of text files that specify properties for the track hub and for each of the data tracks 
   within it</li>
   <li>
   a twoBit file with your sequence if you are setting up an assembly hub. Note that the allowed
-  characters in sequence names are [A-Za-z_0-9_.-]</li>
+  characters in sequence names are [A-Za-z_0-9_-]</li>
   <li>
   an Internet-enabled web server or ftp server </li>
   <!--Question: do we have some general minimum requirements for this?-->
 </ul>
 <p>
 The files are placed on the server in a file hierarchy like the one shown in <em>Example 1</em>. 
 Users experienced in setting up Genome Browser mirrors that contain their own data will find that 
 setting up a track hub is similar, but is usually much easier. Depending on the number and 
 complexity of the data sets, a track hub can typically be set up in a day or two. It is generally 
 easiest to run the command-line data formatting programs in a Linux programming environment, 
 although it's possible to manipulate smaller data sets using Mac OS-X as well.</p>
 <p>
 <b>Note:</b> there is now a <code>useOneFile on</code> hub setting that allows the hub
 properties to be specified in a single file. More information about this setting can be found on the
 <a href="./hgTracksHelp.html#UseOneFile" target="_blank">Genome Browser User Guide</a>.</p>