> For the complete documentation index, see [llms.txt](https://help.csvbox.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.csvbox.io/advanced-installation.md).

# Advanced Installation

1. [Dynamic Columns](/advanced-installation/dynamic-columns.md) - Add new columns to the template at run-time.
2. [Virtual Columns](/advanced-installation/virtual-columns.md) - Create new columns by applying custom data transformation logic.
3. [Unmapped Columns](/advanced-installation/unmapped-columns.md) - Allow users to submit columns not included in the sheet template.
4. [Ignored Columns](/advanced-installation/ignored-columns.md) - Option for users to drop columns from the import process.
5. [Import Links](/advanced-installation/import-links.md) - Accept files from your users without a website or an app.
6. [Validation Functions](/advanced-installation/validation-functions.md) - Implement advance validations using Javascript functions.
7. [Server Side Validation](/advanced-installation/server-side-validation.md) - Validate data at your server, report back errors for correction & re-upload.
8. [Data Transforms](/advanced-installation/data-transforms.md) - Bulk edit the dataset before pushing it to your system.
9. [REST File API](/advanced-installation/import-links.md) - Automate CSV submissions via API.
10. [Environment Variables](/advanced-installation/environment-variables.md) - Variables to configure the importer environment.
11. [Auth API](/advanced-installation/auth-api.md) - Authenticate API requests to CSVBox using a secure header-based scheme.