Well bassically it shows you all the friendly and enemy mobs around u. they will appear with a number above their head. the thing on the lower left shows the amount of mods near u.
If you have windows press f3 if you have a mac press fn + f3
just press f3+b and at the bottom of the screen it will say hitboxes shown
You can't.
press F3. Then look at the Y: It has to be 18 or under to find diamonds.
f3
If you have windows press f3 if you have a mac press fn + f3
Press F3
Simply press F3. It will say the version in the debug info.
If you are asking about the hight level then you look at the Y: coordinates at the top left of F3
You can either create a map or press F3. Pressing F3 will show you your coordinates, the biome you're in, and a whole lot more.
While in the game, press F3 and it will tell you what version you currently have at the top
just press f3+b and at the bottom of the screen it will say hitboxes shown
You can't.
press F3. Then look at the Y: It has to be 18 or under to find diamonds.
f3
f3+h
Press F3 and a screen will pop up. On the upper right hand side of this screen you will see a X Y and Z coordinate. The Y tells you what level you are on.