The SimulationCraft APL syntax says that '&' binds tighter than '|'. In Ovale, 'and' and 'or' have the same precedence and bind left to right. When I glanced at some of the scripts recently, the operators seemed to be used without regard to how SimulationCraft expects the operator precedence to be.

This is just a topic to remind myself to check further.

I was wrong. Ovale has and bind more tightly than or, so there is no issue.