I have a PDF from a client. Everything looks fine till it is printed out on our Indigo. There is artwork that shows up. I tried ripping apart the PDF in illustrator with no luck. On a whim I thought I would try opening it with Affinity Designer and see what I can see. In Affinity it shows a hidden layer which I can unhide and see. The PDF was made in Illustrator. Anyone know how to show hidden layers?