New Mapping Page button styles have been added to the Summer '20 release. Here are their labels from left to right:
Figure 1. 1.10 — Mapping Page Top Right Buttons
Expand All (plus sign with top and bottom borders): Expand all mappings on the page.
Collapse All (minus sign with top and bottom borders): Collapse all mappings
on the page.
New Mapping (plus sign): Create a new Data Source and associated mappings.
Clone Mapping (double document icon): Clone the current mapping and all related configurations.
Update (document with checkmark icon): Save the current mapping.
