What does 'Range' do in the menu element?
The 'Range' in the menu list item element sets which list items at the current level the settings should apply to.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Running the composer update command will update any composer packages that have newer versions available.
Yes, the generated templates can be saved to the database.
Yes, this is possible by creating a custom element.