> For the complete documentation index, see [llms.txt](https://docs.valtimo.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.valtimo.nl/v12/features/case/for-developers.md).

# For developers

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The for developers section within each feature gives more tech heavy information of configuring, extending or altering Valtimo via the codebase.
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## Developer documentation

{% content-ref url="/pages/4EAJWGNf2odzvsyLipM0" %}
[Search fields API](/v12/features/case/for-developers/configuring-search-fields.md)
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{% content-ref url="/pages/rmC1zMk55rFSjhAaZ1ah" %}
[Case list tab order](/v12/features/case/for-developers/customizing-case-list-tabs.md)
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{% content-ref url="/pages/8x0VsfaFRHjSotZGOled" %}
[Custom case list columns](/v12/features/case/for-developers/custom-case-list-columns.md)
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{% content-ref url="/pages/HjBbXhlYqmAc5BrKlIB9" %}
[Custom case tabs](/v12/features/case/for-developers/case-tabs.md)
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{% content-ref url="/pages/Uo9BneO1rBDsXwPpKMSd" %}
[Case migration](/v12/features/case/for-developers/case-migration.md)
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{% content-ref url="/pages/aWJqFB5FuNobhRa807Me" %}
[Custom case headers](/v12/features/case/for-developers/custom-case-headers.md)
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