By default the language code used in the eBook Publisher is English. To change the language code, enter your ISO 639-1 language code in the Language text field.
The eBook Publisher labels the top sections of a chapter, creates an index, and creates a two-level table of contents (TOC) by default. To suppress the automatic creation of an index, or to suppress automatic labeling of sections, uncheck the Create index box, or Autolabel sections box, respectively.
Adusting Autolabel depth and TOC depth
To set the maximum depth of section labeling, enter the desired depth in the Autolabel depth field. Similarly, enter a value in the TOC depth field to set the maximum depth for the table of contents.