Not saying this is the solution, but in Sitecore, you had a configurable bar left of the tree where multiple icons could be shown to highlight certain behaviours: https://cdn.discordapp.com/attachments/882985025803530332/1350037886329819146/image.png?ex=67d54842&is=67d3f6c2&hm=caf1ee0e5a726172848499c578c4b6d61042fce1421e468b57befe2128fcf10c&