as a document author I want to, after inserting an image into my document, right click on the image and choose "insert caption". After selecting this option my cursor should be placed in a new area under the image where I can enter the image caption.

Later I can edit this caption by placing my cursor within the text. If I move, cut, copy/paste this image, the caption should move/cut/copy+paste along with it.

Lastly, I would recommend doing some user research where you have a UX researching + designer + developer watch real users try to create a real document. I really want this software to beat google's.

Cheers,

David