MS Word
Uppercase on Change Case dialog box and All Caps on Fonts dialog box both converts selected text into Capital Letters. What's the difference between the two?

Change Case makes conversion permanent but All Caps on Font can always be reverted
Both are same. They are only two different ways of capitalize text
All Caps on Font dialog box makes the change permanent where Change Case can be always reverted
It is faster to convert from Change Case than from Font dialog box