How to force text on two rows on Ribbon buttons

How do you insert the special character that causes the Widget (buttons on the Ribbon) label to force text to occupy two lines where you want it instead of automatic, like for Insert Block (the word "Block" or "1 Block" is on the second line). Copy and paste does not work of an existing one, nor does holding down "Alt" and pressing 013 (and other characters).

I was not able to answer the question when I got it on email but later the same one found the answer and shared it with me and I thought I should share it here.

When customizing the Ribbon with CUI enter “\n”, like in Insert\n1 Block, and it instantly converts to what it should be when you change focus to another field.