Thanks shooter. Seems an easy fix, most other CFC blocks show the pin name, or the order doesn't matter (&, >=1, +, ×).
In Studio 5K, the order of pins is:
IN0
IN1
G,
so if a commissioning engineer sees the code and they're used to the old style, they might read it wrong.
Workaround for now is to create a SELECT function which calls SEL. The function is in ladder, so if anyone does look at it they will see the pin names.