How can I add something in front of each column in Notepad++?

In Notepad++, you can add something in front of each column using the following methods:

1. Replace using regular expressions:
2. Open Notepad++, press Ctrl + H to open the “Find and Replace” window.
3. In the “Find what” input box, entering “^” (without quotes) represents the beginning of each line.
4. In the “Replace with” input box, enter the content you want to add.
5. Select the option “Regular expression” in the drop-down menu under “Search Mode”.
6. Click on the “Replace All” button to add something in front of each column.
7. Use Column Mode:
8. Open Notepad++, press Alt + Shift + left click with your mouse on the beginning of each line to enter column mode.
9. Hold down the Alt key and use the left mouse button to select the entire line from beginning to end.
10. Please input the content you would like to add.
11. Press the Esc key to exit column mode, where each column will have the content you entered at the beginning.

Both of these methods can be used in Notepad++ to add something before each column. You can choose the method that best suits your needs.