A Note in aria-brailleroledescription (and aria-braillelabel) has a sentence that says:

It is very important to note that when using aria-brailleroledescription authors are solely responsible to align the attribute value with the document language and clearly communicate the use of this attribute to the user.

How does an author "clearly communicate the use of this attribute to the user"?
The note says "It is very important", and yet, as an author, I have no idea how to do this.