+#### Invert mouse and scroll axes
+
+To invert the X and Y axes you can put:
+
+```
+#define PS2_MOUSE_INVERT_X
+#define PS2_MOUSE_INVERT_Y
+```
+
+into config.h.
+
+To reverse the scroll axes you can put:
+
+```
+#define PS2_MOUSE_INVERT_H
+#define PS2_MOUSE_INVERT_V
+```
+
+into config.h.
+