Add sections to the bookbuilder: Young Workers Unite! (Heatwave Communist-Anarchist Federation)

 

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.

 
Section
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Title, author, date...
Young Workers Unite!
Source, notes...