# Modules & Commands Reference
The following pages document the PX4 modules, drivers and commands. They describe the provided functionality, high-level implementation overview and how to use the command-line interface.
Note
This is auto-generated from the source code and contains the most recent modules documentation.
It is not a complete list and NuttX provides some additional commands
as well (such as free). Use help on the console to get a list of all
available commands, and in most cases command help will print the usage.
Since this is generated from source, errors must be reported/fixed in the PX4-Autopilot (opens new window) repository. The documentation pages can be generated by running the following command from the root of the PX4-Autopilot directory:
make module_documentation
The generated files will be written to the modules directory.