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.
HTML is escaped when using Drupal tokens in Site studio as a security measure, this follows Drupal core.
Yes, this is possible by creating a custom element.
In mobile first, your styles will inherit upwards from the smallest media query, whereas in desktop first they will inherit down from the largest media query.
The breakpoint indicator shows you which breakpoint you're viewing your website at in the bottom left of the browser.
Go to Extend > Uninstall and search for Acquia Cohesion Breakpoint indicator.