Model Disappeared From View

Working in SU online. Editing a group in a model. I managed to make the whole thing disappear. I can see 1 axis line and it seems I am zoomed out about 100 miles. I believe it was a key stroke error, not a manual zoom.

I cannot draw new elements of any kind, screen remains grey with every tool. Origin is not visible nor is what’s her name who guards the origin.

I have tried SHIFT Z after reading other posts. NO LUCK.

Not seeing anything specific to ONLINE SU.

Anyone

Have you tried using Zoom Extents?