- * @return EALREADY if radio is already switched off <br> FAIL if radio the
- * current radio state is neither TX_LOADED, RX_PREPARED nor RECEIVING <br>
- * SUCCESS if the command was accepted and the <tt>offDone()</tt> event will
- * be signalled.
+ * @return SUCCESS if the command was accepted and the <tt>offDone()</tt>
+ * event will be signalled; EALREADY if the radio is already switched off,
+ * i.e. in state RADIO_OFF; FAIL if the radio was not switched of because
+ * the current state is not RECEIVING.