This layout shows an example of a knowledge-base style navigation system, where there is no hierarchy, just groups of pages that have certain tags.
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Content types
This section lists different content types and how to work with them.
Formatting
These topics get into formatting syntax, such as images and tables, that you'll use on each of your pages:
Single Sourcing
These topics cover strategies for single_sourcing. Single sourcing refers to strategies for re-using the same source in different outputs for different audiences or purposes.
Special Layouts
These pages highlight special layouts outside of the conventional page and TOC hierarchy.