There are three ways to quickly modify letter case in Word: 1. Use the Shift F3 shortcut key to switch between all capital, all capital and first letter capital in the selected text; 2. Use the "All capital" or "Small capital" options in the font settings to achieve visual capital display without changing the original text content; 3. Use the search replacement function to batch modify the case format of specific vocabulary in combination with wildcards. These three methods are suitable for different scenarios. Shift F3 is convenient to operate and suitable for batch adjustments, font settings are suitable for typesetting needs, and searching for replacements is suitable for handling a large number of repetitive modifications.

Rewriting letter case in documents is actually quite common in Word, such as unified formatting of titles, adjusting English names, or processing text copied from elsewhere. Of course, it can be done by changing letters one by one, but it is inefficient. Word actually comes with several shortcuts, which can save a lot of time if you use them well.

Quickly switch the case of selected text: Shift F3

This is the most direct way. Select the text you want to modify (can be a paragraph, a sentence, or even the entire document), and press Shift F3 and you will find that the selected text will switch between "all capital", "all lowercase" and "first capital and other lowercase".

For example:

• The original text is "hello world", press once to become "HELLO WORLD", press again to become "Hello World", and return to lowercase for the third time.
• This method is suitable for batch adjustments, such as unifying a whole paragraph of English abstract into a title format.

Note: This function has no effect on Chinese, it only works on English letters.

Use "All Caps" or "Small Caps" in the font settings

If you want a word to always be displayed in capital, but don't want to really change the original content (such as just visually unified), you can use this method:

1. Select the text to be modified;
2. Right-click → Font;
3. Check "All Caps" or "Small Caps" in the Font window.

The advantage of this is that although it looks like capitalization, the original content has not changed. Next time you copy it, it will still be the original lowercase content. It is suitable for some typesetting needs, but it is not recommended to make formal content modifications.

Replace function and batch modification of wildcard characters

If you are dealing with a lot of repetitive case problems, such as changing all "http" to "HTTP", you can use the "Find and Replace" function.

The operation steps are as follows:

• Press Ctrl H to open the replacement window;
• Enter the word you are looking for in "Find Content", such as "http";
• Enter the capitalized version of "HTTP" in "Replace with";
• Check "Use Wildcards" (if more precise match is required);
• Click "Replace All".

This method is suitable for people with certain text editing needs, especially when dealing with technical documents and web content.

Basically these commonly used methods. Each type has applicable scenarios, depending on how you want to change and how much you want. Like Shift F3, it is the most convenient, but if you want to make more detailed controls, you have to use font settings or search replacements.

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