Lost Model on the screen

Typing here and there, I cannot find where my model is on the screen.

I recall a keystroke allowing to focus where the work is but it does not work.

Does anyone knows how to find on the screen where is my Model ?

THKS

Did you try Zoom Extents? If so and that didn’t work, upload the model file. I expect we can help you get it straightened out.

It worked.

THKS a lot