+ * \note To make code as compatible as possible, it is assumed that all boards carry a minimum of four LEDs. If\r
+ * a board contains less than four LEDs, the remaining LED masks are defined to 0 so as to have no effect.\r
+ * If other behaviour is desired, either alias the remaining LED masks to existing LED masks via the -D \r
+ * switch in the project makefile, or alias them to nothing in the makefile to cause compilation errors when\r
+ * a non-existing LED is referenced in application code. Note that this means that it is possible to make\r
+ * compatible code for a board with no LEDs by making a board LED driver (see \ref Page_WritingBoardDrivers)\r
+ * which contains only stub functions and defines no LEDs.\r
+ *\r