I thought this feature had been added, but unable to find anything by searching…
Maybe I’m an AI and just hallucinating 
Did you look in the user manual?
Link: Widget Properties inspector
try [nl]
Much appreciated, thanks!
Search term failure on my part I’m afraid ; “line break”, “newline” returned no results in manual, and AI was convinced I needed /n… 
//From the manual:
Another supported tag is “[nl]”:
This tag allows you to add new lines in a widget caption. (see the example screenshot above)
Please…..never depend on AI