One tip, if you want to go back and edit what a character says you have to delete anything after that character. So, if I did want to go back, I copied and pasted my dialogue to a word document alongside, made my changes and then pasted back in the rest of may story.
A bit of a nasty work around for young students. However, a great teaching moment about the usefulness of drafts and then the final step of publishing.
Wikipedia needs an update. It's not an industry anymore, it's a button!