Add sections to the bookbuilder: Manifesto to the Socialists and the people of Italy and program of the Italian anarchist socialist party (Libertarian Socialist Organisation)

 

With complex structures, e.g., a chapter with subsections, selecting only the chapter is likely to select only the chapter's title, so probably you want to select the chapter and all its subsections.

The text structure is shown below.

 
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Title, author, date...
Source, notes...