Rebase in this context means that the identifiers of all files in the
manifest section (and, of course, the
spine section) in the OPF file will be updated to those that match the original file names.
That is, for example.
if there is an entry in the manifest:
Code:
<item id="id34284-ch1" href="chapter_1.xhtml" media-type="application/xhtml+xml"/>
it will be changed to such:
Code:
<item id="chapter_1_xhtml" href="chapter_1.xhtml" media-type="application/xhtml+xml"/>
id="chapter_1_xhtml" is now consistent with the file name:
"chapter_1.xhtml"