Well my current workflow does a lot of:
1. EPUB/HTML Cleanup
--- I compile a list of fixes that the Editor may need to look at.
2.
Calibre: EPUB -> DOCX
3. DOCX file gets sent over to an Editor
--- I send my notes as a separate TXT/email.
--- They may add Word Comments for things I need to correct in ebook.
4.
Calibre: DOCX (Edited) -> EPUB
5. Finalize EPUB
Being able to pass these comments back/forth without clogging up the book with visible HTML or a separate document would be very helpful:
1. EPUB/HTML Cleanup
--- I leave HTML Comments as I spot things that may need correction.
2.
Calibre: EPUB -> DOCX
--- DOCX has my comments
3. DOCX file gets sent over to an Editor
--- They add/remove Word Comments
4.
Calibre: DOCX (Edited) -> EPUB
5. Finalize EPUB
Side Note: Also helpful because you don't have to touch the DOCX or an office suite. You can just stay completely in Calibre/Sigil.
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Another use-case I can think of is formulas:
If there is an image of a formula, I tend to leave the LaTeX version of the equation as HTML Comments:
Code:
<!-- \vec{F}=m\vec{a} -->
<img src="Formula1.png" alt="Force equals mass times acceleration" />
This kind of information gets lost in an EPUB->DOCX conversion, but would be helpful if someone who works in Word (or other tools) has to recreate the image/equation.
* * *
This kind of stuff would be very helpful for getting it into DOCX comments, which can then be imported into Google Docs. Then multiple people could work on corrections simultaneously.
* * *
I may read an ebook on my phone and catch errors.
On the phone, I don't have access to a bloated office suite, nor would I want to read in one!
I tend to use HTML comments directly in the file instead of highlights:
Code:
<!-- Missing Year. -->
<p>Last, First. <i>Book Title</i>. London: Publisher, . p. 123.</p>
I could easily load that file into the computer and Calibre -> DOCX.
Highlights aren't typically very portable between devices/formats. While HTML Comments won't be going anywhere (but are invisible).