Hello All,
This notebook augments zooming with scrollbars for discoverability:
Discoverable Zooming / Heman Robinson | Observable
Discoverability and learnability are particularly important on the web. If users don’t get value from our software quickly, they surf to some other website.
This will be my last contribution for a while. I’ll be hiking some sections on the Appalachian Trail. That’ll clear my head, so maybe I can write more and better afterwards 
Thanks for your comments and suggestions!
Heman.