For that, you will need <code>forward()</code>, <code>left()</code> and <code>right()</code>. Use your brush to mark the ground as you walk. Start marking the ground with <code>brushDown()</code>, and stop it with <code>brushUp()</code> afterward (e.g., to enter your house without marking its ground).The full list of all instructions understood by your buggle can be found in "Help/About this world".
The full list of all instructions understood by your buggle can be found in "Help/About this world".