I've noticed that we have a lot of questions like this:
I have this text:
How can I use vim to turn it into:
I'm not really sure how to tag most of these. Frequently, they are asking about a specific approach, so we can use tag it with that approach. For example, global-command, or substitute. But most of the time, the OP doesn't care (or know) how it's done. They just want to figure out how to transform the text from one form into another.
As far as I know, there is no general purpose tag for questions like this. I think text-processing would be a good tag for this purpose. Do you agree? Should we add this tag? Is there a better name for this?