is there a way to change case to low or high whole block in visual mode vim?

Want to change case to lower in whole block in visual mode. If i want to change case of a single character, i can press ~, but what i need to use in visual mode for changing in selecte开发者_JS百科d area into low or high case ?

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• The ~ also works on visual blocks and 'inverts' the casing (lowercase becomes uppercase, uppercase becomes lowercase)
• u makes the selection lower case (regardless on the original casing)
• U makes the selection upper case (regardless on the original casing)

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The ~ command works on a visually selected block as well.

For example, if you:

1. Press v to enter visual mode
2. Highlight the area of text to modify
3. Press ~

It changes the case of all the highlighted text.

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With visual selection active, press 'u' for lowercase, 'U' for uppercase.

Without visual mode, use 'gu' or 'gU', with motion command. E.g. to uppercase a word 'gUw'.