I am replacing the standard list bullets with unicode bullet characters:
This looks fine, visually:
But when I check the output in Acrobat Pro, I see that the bullets are treated as real pieces of content, and that they appear before the rest of the page content in the content order
To resolve this, I would like to tag these bullets as artifacts.
Following https://drafts.csswg.org/css-content-3/#example-954890b1, I tried suppressing these decorative pseudo elements by setting alt to an empty string, but this resulted in them being omitted visually as well:
I'm going to try a different CSS approach for now, but regardless it would be useful to know if there is a proven technique for labelling items like this as artifacts.
Thanks,
Dan
ul,
ol,
li {
list-style: none;
padding: 0;
margin: 0;
}
ul li::before {
content: '\2022';
display: block;
float: left;
width: 30px;
font-weight: bold;
text-align: center;
margin-left: -30px;
}
This looks fine, visually:
But when I check the output in Acrobat Pro, I see that the bullets are treated as real pieces of content, and that they appear before the rest of the page content in the content order
To resolve this, I would like to tag these bullets as artifacts.
https://www.w3.org/WAI/WCAG21/Techniques/pdf/PDF4 wrote:
The purpose of this technique is to show how purely decorative images in PDF documents can be marked so that they can be ignored by Assistive Technology by using the /Artifact tag. This is typically accomplished by using a tool for authoring PDF.
In PDF, artifacts are generally graphics objects or other markings that are not part of the authored content. Examples of artifacts include page header or footer information, lines or other graphics separating sections of the page, or decorative images.
Example 1: Marking a background image as an artifact using Adobe Acrobat 9 Pro's TouchUp Reading Order Tool
...
Example 2: Marking an image as an artifact in a PDF document using an /Artifact tag or property list
...
https://www.pdfa.org/wp-content/uploads/2019/06/TaggedPDFBestPracticeGuideSyntax.pdf wrote:
3.7 Artifacts
The process of laying out and paginating content for display can lead to the introduction of
additional display items (e.g. page numbers on each page or table borders). These items are not
part of what ISO 32000-1 defines as “real content”; they are considered artifacts of layout (see
14.8.2.2, “Real Content and Artifacts” in ISO 32000-1). A requirement for tagged PDF is to clearly
distinguish “real” content from artifacts. PDF/UA also makes it clear that artifacts must be
accessible, but it is less specific about precisely what is required for content marked as Artifact.
Artifact content must be accessible, therefore the basic rules of accessibility (see 3.2
“Fundamentals”) apply, including requirements for reading order and Unicode.
https://www.pdfa.org/wp-content/uploads/2019/06/TaggedPDFBestPracticeGuideSyntax.pdf wrote:
4.1.4.3 Creation
PDF 1.7 implies that the <NonStruct> structure element type or Artifact marker for marked content
sequences can be used to enclose dot leaders. Accordingly, it is recommended to avoid the
<NonStruct> element in this case, and simply mark dot leaders as Artifact instead.
Following https://drafts.csswg.org/css-content-3/#example-954890b1, I tried suppressing these decorative pseudo elements by setting alt to an empty string, but this resulted in them being omitted visually as well:
ul li::before {
content: $cv-entity-bull / '';
}
I'm going to try a different CSS approach for now, but regardless it would be useful to know if there is a proven technique for labelling items like this as artifacts.
Thanks,
Dan
