     }
 }
 
+/**
+ * Perform a quick stop
+ *
+ * Usage: "stop"
+ */
 void api_stop()
 {
     for (int i = 0; i < 4; i++)

// ============================================================================
// custom functions:

void api_start()
{
    for (int i = 0; i < 4; i++)

    }
}

/**
 * Set the desired velocity for each robot wheel.
 *
 * Usage: "v [wheel 1] [wheel 2] [wheel 3] [wheel 4]"
 * Range: -25000...25000
 * Unit:  steps/second
 */
void api_v()
{
    int v[4] = {0, 0, 0, 0};
