How to view all objects in the level

How to view all objects in the scene(level) just like press Z in the 3ds Max?

You could try to select all objects (Ctrl+A) and just press F to frame in all you have selected.

Cheers, Max

I know Shift key, Control key, Escape key, Option Key, Command key, Left / Right / Center Mouse Keys, but what is a “Strg” key?

Sorry i meant Control key instead of Strg… i edited it.