I woudl like to use heading level 3 (on top of 1 and 2) in my ebooks, but when I make an ODT file with the third level heading, I cannot get Calibre to implement that heading into a generated epub.
I've tried the following XPath in Convert > ToC > Level 3:
Code:
//*[(((name()='h1' or name()='h2')) or name()='h3') or @class = 'chapter']
But I only get levels 1 and 2. Could anyone please tell me how to get a level 3?