Is there a way to break up a label into multiple lines?

[byronpendason]

I tried inserting a \n into the label, but it only showed up verbatim in the label.

I'm making a Traveller Hex map, and I want the label to be three lines. The name of the planet on line one, the Universal World Profile on line 2 (a number in the format of X123456-7), and the planets trade codes in the third line (usually 2 letter acronyms like Ag or HT). Can this be done?