data-* Attributes

data-* attributes are custom HTML attributes used to store machine-readable metadata inside elements—supporting inline trust tagging, provenance tracking, and AI-ready publishing.

🧠 Full Definition

data-* attributes are part of standard HTML and allow publishers to attach custom, machine-readable values to any tag. While they don’t affect what users see, they can be read by scripts, crawlers, and AI systems to infer meaning, scope, or structure.

Within the WebMEM framework, data-* attributes are used for:

• Inline trust markers for fact-level provenance
• Attaching glossary term references to dynamic content
• Flagging blocks for schema generation or Semantic Digest inclusion
• Supporting custom logic for content rendering, scoring, or export

💡 Why It Matters

Not every structured signal needs to live in JSON-LD or Microdata. Sometimes, you need to attach structure to a specific sentence, word, or block—without disrupting your layout or visible content.

data-* attributes let you:

• Inject meaning anywhere in the DOM
• Enable light-touch schema for dynamic systems
• Flag elements for AI-enhanced workflows or editorial pipelines

⚙️ Examples

<span data-trust-id="cms-plan-2025">$0 Premium</span>

<div data-definedterm="Part D Deductible" data-source="CMS.gov">
   Learn how this deductible works.
</div>

<section data-faq="true" data-schema-type="FAQPage">...</section>

🧩 Use in WebMEM

data-* attributes are foundational to:

• Applying trust markers dynamically in CMS environments
• Preparing block-level content for Semantic Digest exports
• Enabling semantic targeting for AI pipelines and training systems

They’re simple, lightweight, and render-proof—making them ideal for in-editor trust scaffolding.

🗣️ In Speech

“data-* attributes are how we quietly tell the machine what’s important—without changing how it looks to a user.”

🔗 Related Terms

• Microdata
• Trust Marker
• Trust Publishing Markup Layer
• Structured Signals