Markers and Alt text

Greetings, Alice!

Thanks for those great details.

Since you're describing the marker, I recommend adding that descriptive text (e.g., brief placement details and its purpose) to the alt text for the marker.

Here's a 0:23-second video of how the NVDA screen reader interacts with a marker with alt text and a label title and description. Also, here are some great resources about accessibility:

• Storyline 360: Alt Text Tips
• Storyline 360: Slide Content Is More Accessible
• Understanding Success Criterion 1.1.1: Non-text Content

Let me know if that helps!