Quote:
Originally Posted by DaltonST
Actually, Calibre does define the name of a custom column. ISBN is a custom column, 3. The user is unable to define the field name, which is isbn, or to change its column-heading, ISBN. Its entry in the custom_column table is shown in the attached image.
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Not sure what ISBN has to do with Define Genres, or anything else, but in one of my libraries I have the ISBN as this -
BR - Ψ²