Many books' TOC are in all uppercased form, generally because of auto-extraction from text. Capitalization function is designed to normalize such TOC easily in one click.
None Capitalization word list can be found and set in (ePubMagicTOCFolder)\lib\noncap.txt, please separate each word with comma, and no space anywhere.
Regular Expression checkbox can enable Regular Expression mode.
For more details please see Help of Regular Expression
Extracted subtitle will be appended after original title.
Please select Menu>Tools>Recover to undo replacement.