> For the complete documentation index, see [llms.txt](https://igb.mit.edu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://igb.mit.edu/bioinformatics-topics/tasks-bioinformatics-methods/ucsc-genome-bioinformatics/filtering-table-browser-queries.md).

# Filtering table browser queries

* Open the [UCSC browser](http://genome.ucsc.edu/)
* Click the "Genomes" link and select group "Mammal", genome "Human" and assembly "Dec. 2013 (GRCh38/hg38)
* Enter the position chr4:133,143,371-133,155,540 and click submit.

<figure><img src="https://498238201-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWuHhstIreJ3jFvE4gQ3y%2Fuploads%2F6IGhdnFkxVTCkCopisZ8%2Fimage.png?alt=media&amp;token=f4358cd4-7f67-45e5-aad2-c4a2b9b8a59e" alt=""><figcaption></figcaption></figure>

* The eye icon allows you to view the result, the pencil is for editing attributes and the X allows deletion.
* Select the FASTA manipulation toolbox on the left. Then select the "Compute sequence length" function. When finished, view the results.