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, the generated templates can be saved to the database.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.