LabelAtlas Asset
In the Assets panel right-click on a folder, and click the context menu item Create -> Label Atlas. It will create a LabelAtlas.labelatlas asset.
After selecting a LabelAtlas asset in the Assets panel, the Inspector panel will display all configurable properties for the LabelAtlas asset.
It’s quite simple to use the LabelAtlas asset. Just setup a new Label component and drag the LabelAtlas asset to the font property of the Label component. Please refer to the documentation for details.