By default, JMP outlines specific terms within the formula. This is called boxing. Boxing is useful when you want to select and modify a specific portion of a formula, or need to determine the order of evaluation that takes place.
Click the red triangle menu next to the keypad and select Show Boxing. When a check appears on the menu beside Show Boxing, the outline appears in the formula. When it does not, the outline does not appear.

Help created on 7/12/2018