Special marks: last change
Vim has a few special marks that are worth knowing about. You don’t have to manually set these marks — Vim does it for us — but they’re often useful targets for jumping to.
The first special mark is '., representing the last change in the current buffer. If you make any change, then move away from it, you can jump back to the place where you made the change with '..
Let’s try this in the editor. Make any change on the marked line, then hit G to go to the bottom of the buffer. Then, try using '. to jump back to where you made the change.
Pro tip: the notion of jumping back to the last change gets a serious boost when we start looking at the changelist in the next lesson!