# Namespaces¶

[configuration.namespaces]

This section describes the oneAPI Threading Building Blocks namespace conventions.

## tbb Namespace¶

Namespace tbb contains public identifiers defined by the library that you can reference in your program.

## tbb::flow Namespace¶

Namespace tbb::flow contains public identifiers defined by the library that you can reference in your program related to the flow graph feature. See Flow Graph for more information.