bbabbd5d2566d47d923d51dbe350634783455999 mspeir Sun Oct 26 12:14:52 2025 -0700 change soe to gi, refs #35031 diff --git src/hg/htdocs/goldenPath/help/api.html src/hg/htdocs/goldenPath/help/api.html index 95bda4c5860..1ec2de5f222 100755 --- src/hg/htdocs/goldenPath/help/api.html +++ src/hg/htdocs/goldenPath/help/api.html @@ -32,34 +32,34 @@ data that is available for their analyses. Web APIs, as a technology, were designed for retrieving relatively small pieces of data, often from Javascript. Consequently, Web APIs may not be the best way to get data from the UCSC Genome Browser.</p> <p> For this reason, we also provide alternative methods to access our data: <ul> <li> The <a href="https://genome.ucsc.edu/cgi-bin/hgTables" target="_blank">Table Browser</a> for custom exports and reports as tab-separated files and can be joined with other tables. <li> For tracks that are stored in MySQL, our MySQL/MariaDB server is <a href="https://genome.ucsc.edu/goldenPath/help/mysql.html" target="_blank">publicly accessible</a>. <li> Dumps of SQL-stored tracks, as well as tracks in binary file formats, can be found on our - <a href="https://hgdownload.soe.ucsc.edu/" target="_blank">download server</a>. + <a href="https://hgdownload.gi.ucsc.edu/" target="_blank">download server</a>. <li> All binary files on the download server (bigBed, bigWig and derivatives like bigPsl, bigChain, - etc) can even be <a href="https://hgdownload.soe.ucsc.edu/downloads.html#gbdb" + etc) can even be <a href="https://hgdownload.gi.ucsc.edu/downloads.html#gbdb" target="_blank">streamed over HTTP</a>. </ul> <p> All these options offer faster bulk downloads and are often easier to parse from scripting languages. If, however, you write Javascript clients or need only a few features within a given range, then the endpoints documented on this page may address your needs. If you require an option or endpoint not listed below for your specific use case, <a href="/contacts.html" target="_blank">contact us</a> and we can try and implement the feature. </p> <h3>Conditions of use</h3> <ul> <li> Avoid excessive or heavy queries that may impact the server performance. Inappropriate query use will result in a restriction of access. </li> <li> @@ -236,31 +236,31 @@ The <b>hubUrl</b> and <b>genome</b> parameters are required together to specify a unique genome in an assembly or track hub. The <b>genome</b> for a track hub will usually be a UCSC database genome. Assembly hubs will have their own unique <b>genome</b> sequences. Specify <b>genome</b> without a <b>hubUrl</b> to refer to a UCSC Genome Browser assembly. </p> <p> Using the <b>chrom=<name></b> parameter will limit the request to the single specified chromosome. To limit the request to a specific position, both <b>start=4321</b> and <b>end=5678</b> must be given together. Using the <b>revComp=1</b> parameter returns the reverse complement. </p> <p> Use the <b>genome</b> argument with the <b>/list/genarkGenomes</b> function to test for the existence of a specific genome assembly in the -<a href='https://hgdownload.soe.ucsc.edu/hubs/' target=_blank>Genark</a> set +<a href='https://hgdownload.gi.ucsc.edu/hubs/' target=_blank>Genark</a> set of assembly hubs. </p> <p> The <b>/list/files</b> endpoint only works for UCSC hosted genome assemblies, not for external hosted assembly hubs. </p> <p> The <b>/findGenome</b> endpoint can find genome assemblies in the browser or any other assembly available at NCBI even when not in the browser. Note, there are almost 4 million assemblies available at NCBI. All searches are <b>case insensitive</b>. Force inclusion: Use a + sign before <b>+word</b> to ensure it appears in the result. Exclude words: Use a - sign before <b>-word</b> to exclude it from the search result. Wildcard search: Add an * (asterisk) at end of <b>word*</b> to search for all terms starting with that prefix. </p> @@ -294,31 +294,31 @@ </div> <!-- Right column --> <div class="col-md-6"> <p> <ul> <li>expRatio (e.g. 'gnfAtlas2' for mm9)</li> <li>factorSource (e.g. 'encRegTfbsClustered' for hg38)</li> <li><a href='/FAQ/FAQformat.html#format9' target=_blank>genePred</a></li> <li>gvf (e.g. 'cnvDevDelayCase' for hg19)</li> <li><a href='/goldenPath/help/interact.html' target=_blank>interact/bigInteract</a></li> <li><a href='/FAQ/FAQformat.html#format12' target=_blank>narrowPeak</a></li> <li><a href='/goldenPath/help/net.html' target=_blank>netAlign</a></li> <li><a href='/FAQ/FAQformat.html#format17' target=_blank>peptideMapping</a></li> <li><a href='/FAQ/FAQformat.html#format10' target=_blank>pgSnp</a></li> <li><a href='/FAQ/FAQformat.html#format2' target=_blank>psl</a></li> - <li><a href='http://hgdownload.soe.ucsc.edu/goldenPath/hg38/database/rmsk.sql' target=_blank>rmsk - repeat masker</a></li> + <li><a href='http://hgdownload.gi.ucsc.edu/goldenPath/hg38/database/rmsk.sql' target=_blank>rmsk - repeat masker</a></li> <li><a href='/goldenPath/help/wiggle.html' target=_blank>wiggle/wig</a></li> </ul> </div> </div> <p> Work is underway to support additional track types <!-- ========== API on mirrors and local installations ======================= --> <a id="Mirrors"></a> <h2>Using the API on mirrors and local installations</h2> <p> In order to access the API from a <a href='/mirror.html' target=_blank>mirror installation</a> or one of the UCSC official mirrors, the complete URL with the cgi-bin should be used:</p> <ul> @@ -353,101 +353,101 @@ <b>api.genome.ucsc.edu/findGenome?q=dog</b></li> <li><a href='https://api.genome.ucsc.edu/findGenome?q=%2Bwhite%20%2Brhino%2A%20-southern' target=_blank>find any genome matching the search string: '+white +rhino* -southern'</a> - <b>api.genome.ucsc.edu/findGenome?q=%2Bwhite%20%2Brhino%2A%20-southern</b></li> <li><a href='https://api.genome.ucsc.edu/findGenome?q=GCF_028858775.2' target=_blank>find any genome with the accession id: <b>GCF_028858775.2</b></a> - <b>api.genome.ucsc.edu/findGenome?q=GCF_028858775.2</b></li> <li><a href='https://api.genome.ucsc.edu/findGenome?q=GRCh38' target=_blank>find any genome with the name: <b>GRCh38</b></a> - <b>api.genome.ucsc.edu/findGenome?q=GRCh38</b></li> <li><a href='https://api.genome.ucsc.edu/list/publicHubs' target=_blank>list public hubs</a> - <b>api.genome.ucsc.edu/list/publicHubs</b></li> <li><a href='https://api.genome.ucsc.edu/list/ucscGenomes' target=_blank>list UCSC database genomes</a> - <b>api.genome.ucsc.edu/list/ucscGenomes</b></li> <li><a href='https://api.genome.ucsc.edu/list/genarkGenomes?maxItemsOutput=5' target=_blank>list GenArk assembly hub genomes</a> - <b>api.genome.ucsc.edu/list/genarkGenomes?maxItemsOutput=5</b></li> <li><a href='https://api.genome.ucsc.edu/list/genarkGenomes?genome=GCF_028858775.2' target=_blank>test if genome GCF_028858775.2 exists in the GenArk assembly hub genomes</a> - <b>api.genome.ucsc.edu/list/genarkGenomes?genome=GCF_028858775.2</b></li> -<li><a href='https://api.genome.ucsc.edu/list/hubGenomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt' +<li><a href='https://api.genome.ucsc.edu/list/hubGenomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt' target=_blank>list genomes from specified hub</a> - -<b>api.genome.ucsc.edu/list/hubGenomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt</b></li> -<li><a href='https://api.genome.ucsc.edu/list/tracks?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ' +<b>api.genome.ucsc.edu/list/hubGenomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt</b></li> +<li><a href='https://api.genome.ucsc.edu/list/tracks?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ' target=_blank>list tracks from specified hub and genome</a> - -<b>api.genome.ucsc.edu/list/tracks?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ</b></li> +<b>api.genome.ucsc.edu/list/tracks?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ</b></li> <li><a href='https://api.genome.ucsc.edu/list/tracks?genome=hg38' target=_blank>list tracks from UCSC database genome</a> - <b>api.genome.ucsc.edu/list/tracks?genome=hg38</b></li> <li><a href='https://api.genome.ucsc.edu/list/chromosomes?genome=hg38' target=_blank>list chromosomes from UCSC database genome</a> - <b>api.genome.ucsc.edu/list/chromosomes?genome=hg38</b></li> <li><a href='https://api.genome.ucsc.edu/list/chromosomes?genome=hg38;track=gold' target=_blank>list chromosomes from specified track in UCSC database genome</a> - <b>api.genome.ucsc.edu/list/chromosomes?genome=hg38;track=gold</b></li> -<li><a href='https://api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ' +<li><a href='https://api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ' target=_blank>list chromosomes from assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ</b></li> -<li><a href='https://api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly' +<br><b>api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ</b></li> +<li><a href='https://api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly' target=_blank>list chromosomes from specified track in assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly</b></li> +<br><b>api.genome.ucsc.edu/list/chromosomes?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly</b></li> <li><a href='https://api.genome.ucsc.edu/list/schema?genome=hg38;track=knownGene' target=_blank>list schema from specified track in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/list/schema?genome=hg38;track=knownGene</b></li> <li><a href='https://api.genome.ucsc.edu/list/files?genome=GCF_000955945.1;maxItemsOutput=5' target=_blank>list download files for UCSC GenArk genome 'GCF_000955945.1' in JSON format limit 5 items output</a> - <br><b>api.genome.ucsc.edu/list/files?genome=GCF_000955945.1;maxItemsOutput=5</b></li> <li><a href='https://api.genome.ucsc.edu/list/files?genome=hs1;format=text;maxItemsOutput=5' target=_blank>list download files for UCSC genome 'hs1' in plain text format limit 5 items output</a> - <br><b>api.genome.ucsc.edu/list/files?genome=hs1;format=text;maxItemsOutput=5</b></li> </ol> <a id="getData_examples"></a> <h3>getData functions</h3> <ol> <li><a href='https://api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM' target=_blank>Get DNA sequence from specified chromosome in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM</b></li> <li><a href='https://api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM;start=4321;end=5678' target=_blank>Get DNA sequence from specified chromosome and start,end coordinates in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM;start=4321;end=5678</b></li> <li><a href='https://api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM;start=4321;end=5678;revComp=1' target=_blank>Get the reverse complement of the DNA sequence from specified chromosome and start,end coordinates in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/sequence?genome=hg38;chrom=chrM;start=4321;end=5678;revComp=1</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=mm10;chrom=chrM;start=4321;end=5678' +<li><a href='https://api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=mm10;chrom=chrM;start=4321;end=5678' target=_blank>Get DNA sequence from a track hub where 'genome' is a UCSC database</a> - -<br><b>api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=mm10;chrom=chrM;start=4321;end=5678</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;chrom=chr1;start=4321;end=5678' +<br><b>api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=mm10;chrom=chrM;start=4321;end=5678</b></li> +<li><a href='https://api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;chrom=chr1;start=4321;end=5678' target=_blank>Get DNA sequence from specified chromosome and start,end coordinates in an assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;chrom=chr1;start=4321;end=5678</b></li> +<br><b>api.genome.ucsc.edu/getData/sequence?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;chrom=chr1;start=4321;end=5678</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;maxItemsOutput=100' target=_blank>Get track data for specified track in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;maxItemsOutput=100</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;chrom=chrM' target=_blank>Get track data for specified track and chromosome in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;chrom=chrM</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;chrom=chr1;start=47000;end=48000' target=_blank>Get track data for specified track, chromosome and start,end coordinates in UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=hg38;track=gold;chrom=chr1;start=47000;end=48000</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly' +<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly' target=_blank>Get track data for specified track in an assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly</b></li> +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://genome-test.gi.ucsc.edu/~hiram/hubs/Plants/hub.txt;genome=araTha1;track=assembly;chrom=chrCp' target=_blank>Get track data for specified track and chromosome in an assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chr1</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene' +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chr1</b></li> +<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene' target=_blank>Get track data for specified track in a track hub</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene;chrom=chr1' +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene</b></li> +<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene;chrom=chr1' target=_blank>Get track data for specified track and chromosome in a track hub</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene;chrom=chr1</b></li> -<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=gc5Base;chrom=chr1;start=4321;end=5678' +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=ensGene;chrom=chr1</b></li> +<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=gc5Base;chrom=chr1;start=4321;end=5678' target=_blank>Wiggle track data for specified track, chromosome with start and end limits in an assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=gc5Base;chrom=chr1;start=4321;end=5678</b></li> +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=gc5Base;chrom=chr1;start=4321;end=5678</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=galGal6;track=gc5BaseBw;maxItemsOutput=100' target=_blank>Wiggle track data for specified track in a UCSC database genome</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=galGal6;track=gc5BaseBw;maxItemsOutput=100</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=galGal6;track=ncbiRefSeqOther;chrom=chr1;start=750000;end=55700000' target=_blank>bigBed data from a UCSC database, chrom and start,end limits</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=galGal6;track=ncbiRefSeqOther;chrom=chr1;start=750000;end=55700000</b></li> </ol> <a id="Search_examples"></a> <h3>Search functions</h3> <ol> <li><a href='https://api.genome.ucsc.edu/search?search=brca1&genome=hg38' target=_blank>Search matches within a UCSC Genome Browser genome assembly</a> - <br><b>api.genome.ucsc.edu/search?search=brca1&genome=hg38</b></li> <li><a href='https://api.genome.ucsc.edu/search?search=bigBed&genome=hg38&categories=helpDocs' target=_blank>Search matches within a UCSC Genome Browser genome assembly and restrict the @@ -458,33 +458,33 @@ search within the UCSC Genome Browser Public Hubs</a> - <br><b>api.genome.ucsc.edu/search?search=cerebellum&genome=hg38&categories=publicHubs</b></li> <li><a href='https://api.genome.ucsc.edu/search?search=signal&genome=hg38&categories=trackDb' target=_blank>Search matches within a UCSC Genome Browser genome assembly and restrict the search within the track database (trackDb) settings</a> - <br><b>api.genome.ucsc.edu/search?search=signal&genome=hg38&categories=trackDb</b></li> </ol> <p> </p> <a id="Error_examples"></a> <h3>Error return examples</h3> <p> <ol> -<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chrI;start=43521;end=54321' +<li><a href='https://api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chrI;start=43521;end=54321' target=_blank>Request track data for non-existent chromosome in an assembly hub genome</a> - -<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.soe.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chrI;start=43521;end=54321</b></li> +<br><b>api.genome.ucsc.edu/getData/track?hubUrl=http://hgdownload.gi.ucsc.edu/hubs/mouseStrains/hub.txt;genome=CAST_EiJ;track=assembly;chrom=chrI;start=43521;end=54321</b></li> <li><a href='https://api.genome.ucsc.edu/getData/track?genome=hg19;track=decipherSnvs' target=_blank>Request track data from a restricted track</a>. See <a href='../../FAQ/FAQdownloads.html#download40' target=_blank>FAQ</a> - <br><b>api.genome.ucsc.edu/getData/track?genome=hg19;track=decipherSnvs</b></li> </ol> </p> <!-- ========== Practical Examples ======================= --> <a id="Practical_examples"></a> <h2>Practical examples</h2> <h3>Looking up the schema of a specific track</h3> <p>