In Word you can put a button on the toolbar (from Customize, Commands, Format, Change Case). Select the text then click repeatedly until you get the format you want. I also think there is a keypress shortcut but can't find it.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?