Hello World
*********************

The Hello World demo (``demo/demo_helloworld``) is a good exaple to understand the deployment of our code. The code can be used in Gazebo simulator or for a real quadruped robot. Here, we also use a Unitree A1 quadruped robot to explain the usage process.

* :ref:`Hello World in Simulation`
* :ref:`Hello World in Real Environments`