Have you ever faced a situation where you just wanted to have a set of characters prepended to a set of lines in one of your files, and wished that there was an easy way to do it. Well Vim comes to your rescue. It gives you a very simple way of doing this
1. Use Ctrl+V to select the first column of text in the lines you want to comment. 2. Then hit Shift+i and type the text you want to insert. 3. Then hit Esc, wait 1 second and the inserted text will appear on every line.
This is one of the requirements for which I use Vim extensively. Hope, it helps others out there.