When I am in the inspector and editing a slide, I have made a mistake that would be nice to hit command Z - undo. However, I don't see this feature. Is it there?

Also am I only saving my changes once I hit OK at the bottom OR can I do command/control S and save things as I go? I am referring specifically to when I am in the Inspector.

We are working on the control+z option for a future update. We've made quite a bit of progress, but still have more work to do.
The changes are only saved when you click OK.

Thanks for clarifying that. Please keep working on an undo. Also being able to save - control-S after I make a change would be nice. I will try to find the suggestion/update idea post and add it to the list.