Miui v6 left button gives you "empty cache"

[blackstones]

Miui v6 when you press the left button next to Home button it gives you "empty cache" in everyapp.How do you get it back to show "more info" like it did in every other miui version?

 

[cbpbxecmecmbeh]

Settings -> buttons

 

[blackstones]

thanks was hidden under settings -- >additional settings --> buttons