I do recall seeing something in the forums or blog a long time ago a script that would let you show/hide the same layer across all the images in a document, but I don't remember where, sorry.

Ah! Got it. Unfortunately, I don't think that is possible. The only “toggle” feature is with the normal Preview mode. I suppose someone could write a script to do it and then you could trigger the script with a shortcut.

Yup! That's what Edit > Keyboard Shortcuts is for! :) Make a new shortcut set, then see product area: View menu.

There are two ways to do this. Sandee Cohen taught me the first years ago, before grep: You search for ^9-^9 in the regular Text tab of the find/change dialog box and apply a character style. Then do another search for – (hyphen) in that particular character style and change it to an en dash. (Then you can find/change a third time to remove the character style if you want.)

But the better way, now that we have grep, is to switch to the grep tab of the find/change dialog box and search for:

(?<=d)-(?=d)

and replace with the en dash. That code searches for any hyphen that has a digit before and after.

Oh, and I meant to ask: How did you get that screen shot of the way it used to be?

I think that's one of the reasons Adobe developed the Acrobat “portfolio” feature — lets you combine files into one PDF. But you have to use Acrobat Pro to make those; not InDesign.

Wow that is really odd. There's no break between spreads! What version of InDesign was that first image from? Are you saying that if you had an object on the 2nd page and another object on the 4th page (next spread down) you could select both at the same time?