til/vim/creating-a-numbered-list-easily.md

Let's say you have the following text in your buffer:

0. quick
1. brown
2. fox
3. jumped
4. over
5. the
6. lazy
7. dog

It's a pain to go each one of them and change them accordingly. Until now, I would solve this problem by creating a macro and applying it to the other lines. But there is a better solution. Visually select all of them and press g<C-a>. And the list will become:

1. quick
2. brown
3. fox
4. jumped
5. over
6. the
7. lazy
8. dog

From the help page:

{Visual}g CTRL-A	Add [count] to the number or alphabetic character in
			the highlighted text. If several lines are
		        highlighted, each one will be incremented by an
			additional [count] (so effectively creating a
			[count] incrementing sequence).  {not in Vi}