> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.bannerify.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Modification reference

> Learn which fields a modification accepts and what each one changes.

A modification changes one layer of a template. Send a list of them in the `modifications` field of a request. [Modifications](/docs/essentials/modifications) explains how layer names map to fields and shows examples for text, images, tables, and charts.


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