BETA release

L_F07 Multi-level list incorrectly tagged

PDF-F37, FAIL

Use case(s): List

Last updated on November 20, 2025

Description

This example demonstrates a failure condition that applies when a multi-level (nested) list is inappropriately tagged.

Nested L tags can only be a child of another L tag OR an LBody tag. An L tag cannot be a child of an LI tag, as demonstrated in this fail case.

If this example had been structured properly it would have shown the nested L tag as a child of the LBody instead of as a child of the LI tag.

Download(s)

These minimal examples are designed to express a single Technique. Effective use requires software that supports Tagged PDF.

UA1_Tpdf-L_F07.pdf

Test(s)

Expected Results

Check #⁠1 is false.

Procedures

For list items that include nested lists, check that the nested list’s L tag is a child of the LBody.

Application to WCAG 2.x

This Technique addresses the following WCAG 2.x Success Critieria:

1.3.2 Meaningful Sequence

1.3.1 Info and Relationships

Matterhorn Protocol

The Matterhorn Protocol 1.1 provides an algorithm for conformance with PDF/UA-1. Matterhorn checkpoint(s) (human or machine) relevant to this use-case:

01-006
09-002
09-005
16-001
16-002
16-003

Accessibility Technique Support Finder

Accessibility Technique Support Finders allows you to quickly locate software and services that claim to support a given Technique. Simply search the internet with a given technique’s finder together with the name of your product.

The technique finder for this Technique is: UA1_Tpdf-L_F07

NOTE: the “technique support finder” concept was introduced in January 2025; please allow time for adoption.