During July-August 2019, new page authoring improvements were rolled out to SharePoint Modern pages. Following are the features which this video explains about -
  • On-Page Anchors
  • Vertical Sections
  • Link Previews
At the time of recording this video, these features were being rolled out to first release tenants and then, to the standard tenants. If you do not see these in your tenant yet, you will be getting them soon.

SharePoint Modern Page Authoring Improvements - On-Page Anchors, Vertical Sectio...
Aug 29 2019

Ram Prasad M

This video shows the page authoring improvements released in July 2019 for the SharePoint Online Modern Sites.