The reason I ask is I used Kindle Kids Book Creator (KKBC) to create my childrens book. Readers have discovered 2 small typos.
KKBC uses .opf format. But when you save the book to publish to Amazon, I discovered KKBC doesn't save the .opf format, but REPLACES it with .mobi
Had I known that in advance I would made a copy of the .opf format. Guess I know for my next kids book.
If I'd uploaded images with text on them this wouldn't be an issue. But I wanted to take advantage of the "text pop up" feature, meaning I uploaded images only into KKBC. Then within KKBC I typed the text.
So, if I can't edit .mobi easily, it means re-typing all the text, being sure to correct the typos and not make any new ones. Unfortunately, there is no way to "copy/paste" the text. Sigh.
WAY too technical question for me. I always have someone do this work for me.
James Woosley would be a person to ask about this.
Aaron is going to give me some instructions and I'll look at Calibre too. Good to know James is a resource too if I need him. Thanks, Kent!