- * Prepares the radio for receive mode. This command will fail, if the radio
- * is not in the state RADIO_OFF. The actual receive operation will be
- * triggered through a call to <tt>receive()</tt>.
+ * Switches the radio to receive mode at time <tt>t0 + dt</tt> or immediately
+ * if <tt>t0 + dt</tt> lies in the past. Analogous to the <tt>Timer</tt>
+ * interface <tt>t0</tt> is interpreted as a time in the past. Consequently,
+ * if <tt>dt = 0</tt> then the radio is always switched to receive mode
+ * immediately. This command will fail, if the radio is currently not in
+ * state RADIO_OFF. Once the radio is in receive mode an event
+ * <tt>enableRxDone</tt> will be signalled.
+ *
+ * @param t0 Reference time for receive operation