# How to add --sjdbGTFfeatureExon to star

**URL:** <https://help.galaxyproject.org/t/how-to-add-sjdbgtffeatureexon-to-star/9363>\
**Category:** usegalaxy.org support\
**Tags:** transcriptomics, featurecounts, rna\_star\
**Created:** [January 27, 2023, 11:06am UTC](https://help.galaxyproject.org/t/how-to-add-sjdbgtffeatureexon-to-star/9363 "2023-01-27T11:06:57Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jennaj](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/jennaj/32/27_2.png) [@jennaj](https://help.galaxyproject.org/u/jennaj)\
**Post date:** [November 20, 2023, 5:23pm UTC](https://help.galaxyproject.org/t/how-to-add-sjdbgtffeatureexon-to-star/9363/4 "2023-11-20T17:23:47Z")

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Hi @Naibin_Duan

The option exists in the wrapper. Try a “browser find” on the tool forms to find nested options. Most are tagged with the command-line term. Example:

 ![Screen Shot 2023-11-20 at 9.07.07 AM](https://us1.discourse-cdn.com/flex020/uploads/galaxy/original/2X/0/021b61886ebbb7728edc7cc157dc98e984fa29f8.png)

To change GTF content itself as a preparation step, one could try using **gffread**.

For the prior Q&A, that was just advice for what seemed like a newer user, so keeping it simple and supported by tutorials was the idea behind the reply. There are of course probably N+ ways to do any particular manipulation… other Q&A at this forum covers most for Star already.

> [@Naibin\_Duan](#):
>
> The question he is asking is actually a common issue (a common problem encountered within a Galaxy instance): how to add parameters to a program?

Anyone can contribute to adding more options to existing tool wrappers, or to create entirely new wrappers. If the best practices are followed, we’ll host those in the [Main ToolShed](https://toolshed.g2.bx.psu.edu/). If still in development, the [Test ToolShed](https://testtoolshed.g2.bx.psu.edu/) is a sandbox. And there is always the option to host your own ToolShed for custom/private work. All work with a Galaxy instance the same way. The Docs below have wheres and how-tos.

This is Q&A from last week with some more details:

> [@Request installation of the following tools](https://help.galaxyproject.org/t/request-installation-of-the-following-tools/11165/2):
>
> These tools do not seem to be wrapped for use in Galaxy so somebody needs to do the work before they can be installed in a Galaxy instance. If you want ot give it a shot a comprehensive tutorial is here: [Building Galaxy Tools Using Planemo — Planemo 0.75.11 documentation](https://planemo.readthedocs.io/en/latest/writing_standalone.html)
> 
> I’d also recommend creating an issue in the IUC repository ([Issues · galaxyproject/tools-iuc · GitHub](https://github.com/galaxyproject/tools-iuc/issues)) – somebody might have already started on the wrapping and you can get other feedback too.

And, this is just a summary of key places where development happens that will lead to the rest: [Private Galaxy Servers](https://help.galaxyproject.org/docs?topic=10861).

Feel free to ask questions if anything is not clear or you need help 🙂 Matrix can be better for quick development help since it reaches the technical teams directly, but you can also start here and we can help to loop that in as needed. Ask in a new topic please.

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