BETA release

G4_F02 Order of marked content sequences within a tag incorrectly set

PDF-F11, FAIL

Use case(s): Fundamental 4: Logical Content Order

Last updated on April 21, 2025

Description

This example demonstrates a failure condition in which the order of content within a tag does not match the author’s intent.

Often, when text or a page is rotated, the content order within the tags is incorrect, like in this example. Even though English is written left to right, the lines of text within the paragraphs should be ordered from the right side of the page to the left.

Download(s)

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

UA1_Tpdf-G4_F02.pdf

Test(s)

Expected Results

Although check #⁠1 is true, check #⁠2 is false.

Procedures

Check that the logical content order of the tags matches the author’s intent.
Check that the order of the content within each tag matches the author’s intent.

Application to WCAG 2.x

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

1.3.1 Info and Relationships

1.3.2 Meaningful Sequence

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
09-001

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-G4_F02

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