Saturday Mac riddles 283

Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation.

1: Hidden folder of indexes for a beam of light on stage.

2: Written exam preparations conceal saved versions.

3: Invisible happenings record changes to files.

To help you cross-check your solutions, or confuse you further, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.