How the Vim editor adds or removes multiple lines of comments

One, the method of annotating multiple lines

1. Enter the Vi/vim editor and press CTRL + V to enter visual mode (visual BLOCK)

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2. move the cursor up or down, select the beginning of multiple lines, as shown in

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3, When you are finished, press the I key in uppercase, and you will be prompted to enter the "insert" mode at the bottom, entering the annotation you want to insert, such as #

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4, Finally, press the ESC key two times, and you'll notice that multiple lines of code have been annotated

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Two, uncomment multiple lines

       also CTRL + V into the column selection mode, move to the cursor to select the comment, press D, the comment is deleted.

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How the Vim editor adds or removes multiple lines of comments