Create a nonbreaking slash

Situation

You have certain cases where you want Frame to break a line after a slash (as in the and/or phrase) as well as some cases where you do not (a slash in a product part number, for instance). You don't want to turn off breaking entirely.

Solution

Create a variable with a backward slash followed by a forward slash: \/

Frame won't break after the variable.

Thanks to Steven Siddle in the Adobe forums.