The following is a hierarchical overview of the namespaces, classes and members contained within the Omni library.
Expanding the items reveals their inner classes, functions and members while clicking an item will take you to its help page.

Hovering over an item will tell you what type it is (e.g. namespace, typedef, etc.), as well as give a brief overview of the item.
The legend is below the table for reference.
Legend:

Key	Type
	namespace
	class
	struct
	namespace/class/struct function
	namespace/class/struct member
	class/struct operator
	enum type
	typedef type