# A-Z Filters Developer Documentation

> Hooks documentation for A-Z Filters

Version: 1.4.2

This file contains links to documentation sections following the llmstxt.org standard.

## Table of Contents

- [Filter - gravityview/az_filter/anchor](https://www.gravitykit.dev/docs/gravityview-az-filters/filters/gravityview-az_filter-anchor): Modifies the anchor ID added to the end of the letter filter links. Return empty string to remove.
- [Filter - gravityview/az_filter/collation](https://www.gravitykit.dev/docs/gravityview-az-filters/filters/gravityview-az_filter-collation): Override the default query collation for the letter comparison.
- [Filter - gravityview/az_filter/parameter](https://www.gravitykit.dev/docs/gravityview-az-filters/filters/gravityview-az_filter-parameter): Documentation for the gravityview/az_filter/parameter filter.
- [Filter - gravityview_az_filter_parameter](https://www.gravitykit.dev/docs/gravityview-az-filters/filters/gravityview_az_filter_parameter): :::warning[Deprecated]
- [Filter - gravityview_blocklist_field_types](https://www.gravitykit.dev/docs/gravityview-az-filters/filters/gravityview_blocklist_field_types): | Name | Type | Description |
- [Filters](https://www.gravitykit.dev/docs/gravityview-az-filters/filters): A-Z Filters filters
- [A-Z Filters Developer Documentation](https://www.gravitykit.dev/docs/gravityview-az-filters): Developer documentation for A-Z Filters including hooks, actions, filters, and PHP API reference