     }
 }
 
+/**
+ * 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};

    }
}

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

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

/**
 * Start the engines
 *
 * Usage: "start"
 */
void api_start()
{
    for (int i = 0; i < 4; i++)
