

A parentheses-like mark to group parts of a sentence when it’s not clear which part a word belongs to. An example I saw lately that may not translate very well: “You are required to arrive an hour early so there’s time to do x, do y and do z”. Are you required to do y and z or do you just need the extra time to do them? You can usually tell from context but this type of mixup does happen sometimes.
Yeah it’s not a great example, the difference could be on whether you’d have to do y and z before getting there or they’d give you the materials to do them on the spot. Say signing a form they provide vs finding it, printing it and bringing it with you.