How can I "unhide" everything on my canvas?

Question

I accidentally hit a keyboard button and all of the elements in my project became invisible, so that now all I'm looking at is a white background. I've tried hitting every key, but nothing is bringing them back. What is this command, and how do I undo it?

Answer 1

Chances are you "Soloed" your background (or the white layer object you see.)
Select the layer that's visible in the canvas and go to Object (menu) and look down the list to see if Solo is checked. [You can also right-click on the layer and see if Solo is checked in the popup menu.] If so, uncheck it.
If you don't know which layer is soloed, you can select all the layers in the layers list, then from the Object menu select Solo, then unselect Solo (you want the "end state" to be unsoloed for all the layers.)