Content inside a library can be organized by folders and categories.
Organization by folders allows you to organize files the way you would organize them
in a file system. A content has a unique path made by an ordered list of folders,
and a content can exist only in a single physical folder. Figure 1.
Organization by categories allows more flexibility. A content could belong to more
than one category. In the example shown, Content B belongs to categories Category B
and Category C. Content C has no category. Figure 2.
