cd5a9cb6994919e931d32d43bed2ad149e87c62c
dschmelt
  Wed May 8 11:09:54 2019 -0700
Adding more info and changes from Brian's proofread #23131

diff --git src/hg/htdocs/FAQ/FAQlink.html src/hg/htdocs/FAQ/FAQlink.html
index 0943684..1bdacca 100755
--- src/hg/htdocs/FAQ/FAQlink.html
+++ src/hg/htdocs/FAQ/FAQlink.html
@@ -1,157 +1,209 @@
 <!DOCTYPE html>
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 <h1>Frequently Asked Questions: Linking to the Genome Browser</h1>
 
 <h2>Topics</h2>
 
 <ul>
 <li><a href="#link1">Creating a sharable URL to view specific tracks</a></li>
 <li><a href="#link2">Linking to the Browser at a specific position</a></li>
+<li><a href="#trackViz">Setting track visibility via URL</a></li>
+<li><a href="#ctUrl">Loading Custom Tracks with the URL</a></li>
+<li><a href="#hubUrl">Loading Track Hubs and Assembly Hubs with the URL</a></li>
 <li><a href="#link3">Linking to gene specific information</a></li>
-<li><a href="#trackViz">Changing Track Visibility via URL</a></li>
-<li><a href="#ctUrl">Adding Custom Tracks via URL</a></li>
-<li><a href="#hubUrl">Connection to a Track Hub via URL</a></li>
-<li><a href="../goldenPath/help/customTrack.html#optParams">Additional URL parameters</a></li>
+<li><a href="#hgsid">The hgsid parameter</a></li>
+<li><a href="#moreInfo">Additional URL parameters</a></li>
 </ul>
 
 <a name="link1"></a>
 <h2>Creating a sharable URL to view specific tracks</h2>
 <h6>How do I create a link to the Genome Browser to share my data?</h6>
 <p> 
 The easiest way to save and share tracks from the URL is by
 <a href="../cgi-bin/hgLogin" TARGET="_blank">logging in</a> to your Genome Browser account and
 creating a <a href="../goldenPath/help/hgSessionHelp.html">saved session</a>.
-Saved sessions are a versatile way to share data that may include native data, Custom Tracks, and
-Track Hubs.</p>
+Saved sessions are a versatile way to share data that may include native annotations, Custom
+Tracks, Track Hubs, and Assembly Hubs.</p>
 <p>
-You will be able to save and share Genome Browser sessions with the following format:
-<p><code>http://genome.ucsc.edu/s/<em>userName</em>/<em>sessionName</em></code></p></p>
-<p>
-Or if you prefer a modifiable, longer URL; use this format:</p>
-<p><code>http://genome.ucsc.edu/cgi-bin/hgTracks?hgS_doOtherUser=submit&hgS_otherUserName=[<em>UserName</em>]&hgS_otherUserSessionName=[<em>SessionName</em>]</code></p>
+You will be able to share Genome Browser sessions with the following link format:
+<p><code>http://genome.ucsc.edu/s/<em>userName</em>/<em>sessionName</em></code></p>
 <p>
 For instructions on creating a saved session, go to the
-<a href="../goldenPath/help/hgSessionHelp.html#Create">Saved Session Help page</a>.</p>
-<p> 
+<a href="../goldenPath/help/hgSessionHelp.html#Create" target ="_blank">session user guide</a>.
 If you want to specify track settings in a URL directly, please read the section on 
-<a href"#trackViz">changing track visibility via URL</a> for a complete description. 
-Note that these URL parameters do not work with the shorter session URLs. 
+<a href"#trackViz">setting track visibility via URL</a> for a complete description. 
+Note that URL parameters do not work with the shorter session URLs. </p>
+
+<p>
+Or if you prefer a modifiable, longer URL; use the following format:</p>
+<p><code>http://genome.ucsc.edu/cgi-bin/hgTracks?hgS_doOtherUser=submit&hgS_otherUserName=[<em>UserName</em>]&hgS_otherUserSessionName=[<em>SessionName</em>]</code></p>
+<p>It has the advantage of being able to add additional URL parameters to the end and the 
+flexibility of replacing "hgTracks" with different tools to share saved settings on the Table 
+Browser (hgTables), Variant Annotation Integrator (hgVai), or Data Integrator (hgIntegrator). 
+This will preserve your option selections and can be useful to share.</p>
 
 <a name="link2"></a>
 <h2>Linking to the Browser at a specific position</h2>
 <h6>How do I make a link to a specific genome or position?</h6>
 <p>
 You can link to a specific genome assembly and position in the Genome Browser using a URL with
 the <code>db=</code> and <code>position=</code> parameters:</p>
 <p><code>http://genome.ucsc.edu/cgi-bin/hgTracks?db=[<em>db</em>]&position=[<em>position</em>]</code></p>
 <p>
 Where:</p>
 <ul>
   <li>
   <code>db</code> - designates a specific genome assembly. For example, <code>db=hg19</code> 
   refers to the Feb. 2009 human genome release. For a list of db parameter values that 
   correspond to UCSC assemblies, see the <a href="FAQreleases.html#release1">list of UCSC 
   releases</a>.</li>
   <li><code>position</code> - can be any search term for the genome specified, including
   a position range or a gene identifier. This often takes the form of
   <code>position=chr1:35000-40000</code>.</li>
 </ul>
 <p>The following link is an example of a URL that declares assembly and position:</p>
-<p><code><a href=../cgi-bin/hgTracks?db=hg19&position=chr1:35000-40000>http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&position=chr1:35000-40000</a></code></p>
-
-<a name="hgsid"></a>
-<h2>The <em>hgsid</em> parameter</h2>
-<h6>What is the hgsid parameter and should I include it in Genome Browser links?</h6>
-<p>The hgsid is a temporary user ID that stores setting and custom track information in the URL.
-Including it in any shared URLs is a privacy concern, and it should be removed when 
-constructing any links to the Genome Browser. Creating 
-<a href="../goldenPath/help/hgSessionHelp.html#Create">Saved Sessions</a> is the recommended way to
-share Genome Browser information.
-</p>
-
+<p><code><a href="../cgi-bin/hgTracks?db=hg19&position=chr1:35000-40000">http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&position=chr1:35000-40000</a></code></p>
 
 <a name="trackViz"></a>
-<h2>Setting Track Visibitlies via URL</h2>
+<h2>Setting Track Visibility via URL</h2>
 <h6>How do I create a custom URL to control the visibility of specific tracks?</h6>
 <p>
 You can control the visibility of tracks from the URL with the following parameters, 
-each linked by the "&amp;" sign, similar to position commands. For the full list, please see the 
+each linked by the "&amp;" sign, similar to position parameters. For the full list, please see the 
 <a href="../../goldenPath/help/customTrack.html#optParams" target ="_blank">optional URL 
 parameters</a> section of the Custom Tracks User's Guide. Note that <em>italic text</em> indicates
 a user choice, not a working example.</p>
 <ul>
 <li>hideTracks=1</li>
 <li><em>trackName</em>=hide|dense|pack|full</li>
 <li>textSize=<em>number</em></li>
+<li>ignoreCookie=1</li>
 </ul>
 <p>
-For example, you can use the following command to hide every track and set the knownGene track to 
-the pack visibility:</p>
-<p><code><a href=../cgi-bin/hgTracks?db=hg38&hideTracks=1&knownGene=pack>http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hideTracks=1&knownGene=pack</a></code></p>
+For example, you can use the following command to hide every track (hideTracks=1) and set the knownGene track to 
+the pack visibility (knownGene=pack):</p>
+<p><code><a href="../cgi-bin/hgTracks?db=hg38&hideTracks=1&knownGene=pack">http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hideTracks=1&knownGene=pack</a></code></p>
 
 <p>Composite tracks have additional URL parameters that encode options to hide, select, and 
 display subtracks.</p>
 <ul>
 <li><em>trackName</em>_hideKids=1</li>
 <li><em>trackName</em>_sel=1</li>
-<li>ignoreCookie=1</li>
 </ul>
 <p>For example, the following URL hides all tracks (&amp;hideTracks=1), hides a specific composite
 track's default subtracks (&amp;refSeqComposite_hideKids=1), turns on one specific subtrack 
 (&amp;ncbiRefSeqCurated=full), and checks a box to display that subtrack 
 (&amp;ncbiRefSeqCurated_sel=1).
 
 <pre><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hideTracks=1&refSeqComposite_hideKids=1&ncbiRefSeqCurated=full&ncbiRefSeqCurated_sel=1">https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hideTracks=1&refSeqComposite_hideKids=1&ncbiRefSeqCurated=full&ncbiRefSeqCurated_sel=1</a></pre>
 
+
+<h2>Loading data with the URL</h2>
+<a name="ctUrl"></a>
+<h3>Loading Custom Track data with the URL</h3>
+<h6>How do I create a link to my custom track data?</h6>
+<p>
+You can combine the URL visibility settings with the <code>&amp;hgct_customText=</code> parameter using
+a track line you would otherwise put in the <a href="../cgi-bin/hgCustom">custom track 
+input box</a>. The following example shows the <code>hgct_customText</code> parameter accepting
+a bigBed file URL as a custom track:
+</p>
+<pre><a href="../cgi-bin/hgTracks?db=hg38&hgct_customText=https://genome.ucsc.edu/goldenPath/help/examples/bigBedExample.bb">http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hgct_customText=https://genome.ucsc.edu/goldenPath/help/examples/bigBedExample.bb</a></pre>
+
+<p>
+If you want to add more information to the Custom Track, you can do so using the 
+<code>hgct_customText</code> parameter. Since this is a URL, you must use "%20" to encode 
+for spaces and "%0A" for a new line character. For example, the following example shows Custom
+Track input pasted in the <a href="../cgi-bin/hgCustom">custom track input box</a> and the 
+equivalent input in the URL:
+
+<pre>browser position chr21:33038946-33039092
+track type=bam bigDataUrl=https://genome.ucsc.edu/goldenPath/help/examples/bamExample.bam name=Example description=ExampleBAM</pre>
+<pre><a href="../cgi-bin/hgTracks?db=hg38&hgct_customText=browser%20position%20chr21:33038946-33039092%0Atrack%20type=bam%20bigDataUrl=https://genome.ucsc.edu/goldenPath/help/examples/bamExample.bam%20name=Example%20description=ExampleBAM">http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hgct_customText=browser%20position%20chr21:33038946-33039092%0Atrack%20type=bam%20bigDataUrl=https://genome.ucsc.edu/goldenPath/help/examples/bamExample.bam%20name=Example%20description=ExampleBAM</a></pre>
+<p>
+More information on custom track parameters can be found in the 
+<a href="../goldenPath/help/customTrack.html">Custom Track user guide</a>.</p>
+
+
+<a name="hubUrl"></a>
+<h3>Loading Track Hubs and Assembly Hubs with the URL</h3>
+<h6>How do I create a link to my track hub or assembly hub?</h6>
+<p>Similar to custom tracks, track hubs can be loaded into the URL using the 
+<code>&amp;hubUrl=</code> parameter. This parameter takes input similar to the
+<a href="../cgi-bin/hgHubConnect#unlistedHubs">track hub input box</a>. The following example
+links to the hg19 genome database and an example track Hub:</p>  
+<pre><a href=../cgi-bin/hgTracks?db=hg19&hubUrl=https://genome.ucsc.edu/goldenPath/help/examples/hubDirectory/hub.txt>http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&hubUrl=https://genome.ucsc.edu/goldenPath/help/examples/hubDirectory/hub.txt</a></pre>
+
+<p>Track hubs' track visibility can also be changed from the URL parameters. The following link 
+specifies the hg19 genome database (db=hg19), loads a track hub (hubUrl=http), hides all tracks
+(hideTracks=1), hides the subtrack kids of a particular track (gtexRnaSignalMaleYoung_hideKids=1),
+sets a specific subtrack to be displayed (gtexRnaSignalSRR1311243=full), and ignores user settings
+(ignoreCookie=1).</p>
+<pre><a href="../cgi-bin/hgTracks?db=hg19&hubUrl=http://hgdownload.soe.ucsc.edu/hubs/gtex/hub.txt&hideTracks=1&gtexRnaSignalMaleYoung_hideKids=1&gtexRnaSignalMaleYoung=full&gtexRnaSignalSRR1311243=full&ignoreCookie=1">https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&hubUrl=http://hgdownload.soe.ucsc.edu/hubs/gtex/hub.txt&hideTracks=1&amp;gtexRnaSignalMaleYoung_hideKids=1&amp;gtexRnaSignalMaleYoung=full&amp;gtexRnaSignalSRR1311243=full&ignoreCookie=1</a></pre>
+
+<p>
+To link to an assembly hub and display data on a non-natively supported genome, the same 
+parameters apply. To specify the intended genome assembly, instead of using <code>db=</code>,
+you must use <code>genome=<em>araTha1</em></code>, where <em>araTha1</em> is the name set by
+your genomes.txt file in the line <code>genome araTha1</code>.</p>
+<pre><a href=../cgi-bin/hgTracks?genome=araTha1&hubUrl=http://genome.ucsc.edu/goldenPath/help/examples/hubExamples/hubAssembly/plantAraTha1/hub.txt>https://genome.ucsc.edu/cgi-bin/hgTracks?genome=araTha1&hubUrl=http://genome.ucsc.edu/goldenPath/help/examples/hubExamples/hubAssembly/plantAraTha1/hub.txt</a></pre>
+<p>
+To see the files behind that assembly hub, please visit the
+<a href="http://genome.ucsc.edu/goldenPath/help/examples/hubExamples/hubAssembly/plantAraTha1/">
+hub's directory</a>. For more information on assembly hubs in general, please see the
+<a href="http://genomewiki.ucsc.edu/index.php/Assembly_Hubs" target ="_blank">assembly hub wiki</a>, the <a
+href="http://genome.ucsc.edu/goldenPath/help/hgTrackHubHelp.html">track hub user guide</a>,
+or the <a href=http://genome.ucsc.edu/goldenPath/help/hubQuickStartAssembly.html>quick start guide
+to assembly hubs</a>.
+
 <a name="link3"></a>
-<h2>Linking to the Browser to get gene information</h2>
-<h6>How do I link to a specific gene or specific gene description page?</h6><p>
+<h2>Linking to gene specific information</h2>
+<h6>How do I link to a specific gene or specific gene description page?</h6>
+<p>
 To jump directly to a gene's position on the Genome Browser, set the position parameter in the
 URL to a gene symbol (e.g., TP53, MTOR, KRAS) and add the parameter
 <code>&amp;singleSearch=knownCanonical</code>. For example, the following link will open the
 Genome Browser for the hg19 human assembly at the position of TP53 on the knownCanonical dataset
 </p>
 <p><code><a href="../cgi-bin/hgTracks?db=hg19&singleSearch=knownCanonical&position=TP53" target="_blank">http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&singleSearch=knownCanonical&position=TP53</a></code></p>
 <p>
 <a name="gene"></a>
 You can also link directly to gene description pages from the URL. Instead of a position search,
 gene descriptions use the <code>&amp;hgg_gene=</code> URL parameter. The following URL connecting
 to 'hgGene' will open up the Genome Browser description page containing protein function,
 expression profile, and links to additional information for the gene TP53.
 </p>
 <p><code><a href="../cgi-bin/hgGene?db=hg19&hgg_gene=TP53" target="_blank">http://genome.ucsc.edu/cgi-bin/hgGene?db=hg19&hgg_gene=TP53</a> </code></p>
 
 
-<h2>Loading data using a URL</h2>
-<a name="ctUrl"></a>
-<h3>Load Custom Track data with a URL</h3>
-<h6>How do I create a link to my custom track data?</h6>
-<p>
-You can combine the URL visibility settings with the <code>&amp;hgct_customText=</code> parameter using
-a track line you would otherwise put in the <a href=../cgi-bin/hgCustom>custom track 
-input box</a>. The following is an example of the <code>hgct_customText</code> URL variable, where
-"%20" is the URL encoding for spaces:</p>
-<p>
-Try the following example of the hgct_customText URL variable.
-<pre><a href=../cgi-bin/hgTracks?db=hg38&hgct_customText=browser%20position=chr1%20track%20type=bigBed%20bigDataUrl=https://genome.ucsc.edu/goldenPath/help/examples/bigBedExample.bb>http://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&hgct_customText=track%20type=bigBed%20bigDataUrl=https://genome.ucsc.edu/goldenPath/help/examples/bigBedExample.bb</a></pre>
-</p>
-
-<a name="hubUrl"></a>
-<h3>Load a Track Hub with a URL</h3>
-<h6>How do I create a link to my track hub or assembly hub?</h6>
-<p>Similar to custom tracks, track hubs can be loaded into the URL using the 
-<code>&amp;hubUrl=</code> parameter. This parameter takes input similar to the
-<a href=../cgi-bin/hgHubConnect#unlistedHubs>track hub interface</a>. Try the following example
-for reference:</p>  
-<pre><a href=../cgi-bin/hgTracks?hubUrl=https://genome.ucsc.edu/goldenPath/help/examples/hubDirectory/hub.txt&db=hg19>http://genome.ucsc.edu/cgi-bin/hgTracks?hubUrl=https://genome.ucsc.edu/goldenPath/help/examples/hubDirectory/hub.txt&db=hg19</a></pre>
 
-<p>Hubs track visibility can also be changed from the URL parameters. The following link loads a
-specific track from a supertrack with multiple composite subtracks.</p>
-<pre><a href"https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&hubUrl=http://hgdownload.soe.ucsc.edu/hubs/gtex/hub.txt&hideTracks=1&gtexRnaSignalMaleYoung_hideKids=1&gtexRnaSignalMaleYoung=full&gtexRnaSignalSRR1311243=full&ignoreCookie=1">https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg19&hubUrl=http://hgdownload.soe.ucsc.edu/hubs/gtex/hub.txt&hideTracks=1&amp;gtexRnaSignalMaleYoung_hideKids=1&amp;gtexRnaSignalMaleYoung=full&amp;gtexRnaSignalSRR1311243=full&ignoreCookie=1</a></pre>
+<a name="hgsid"></a>
+<h2>The <em>hgsid</em> parameter</h2>
+<h6>What is the hgsid parameter and should I include it in Genome Browser links?</h6>
+<p>The hgsid is a temporary user ID that stores setting and custom track information in the URL.
+Including it in any shared URLs is a privacy concern, and it should be removed when
+constructing any links to the Genome Browser. Creating
+<a href="../goldenPath/help/hgSessionHelp.html#Create">Saved Sessions</a> is the recommended way to
+share Genome Browser information.
+</p>
 
+<a name="moreInfo"></a>
+<h2>Additional URL parameters</h2>
+<h6>Are there any more resources for URL and link parameters?</h6>
+<p>
+For more information, please see our <a href=../goldenPath/help/customTrack.html#optParams>section
+on URL parameters for custom tracks</a>. If you cannot find what 
+you are looking for, please contact our active mailing list by emailing 
+<a href="mailto:&#103;e&#110;o&#109;&#101;&#64;&#115;&#111;&#101;.&#117;&#99;&#115;c.
+e&#100;u">&#103;e&#110;o&#109;&#101;&#64;&#115;&#111;&#101;.&#117;&#99;&#115;c.e&#100;u</a>. All 
+messages sent to that address are publicly archived. If your question includes sensitive data, 
+you may send it instead to <a href="mailto:&#103;e&#110;&#111;&#109;&#101;&#45;&#119;w&#119;
+&#64;&#115;&#111;&#101;.u&#99;&#115;c.&#101;&#100;&#117;">
+&#103;e&#110;&#111;&#109;&#101;&#45;&#119;w&#119;&#64;&#115;&#111;&#101;.
+u&#99;&#115;c.&#101;&#100;&#117;</a></p>
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