Minor edits.

Author: rbdannenberg

src/o2.h

@@ -801,9 +801,10 @@ int o2_service_new(const char *service_name);
  *
  * @return #O2_SUCCESS if success, #O2_FAIL if not.
  *
- * After this call, messages to tappee are copied, modified by replacing
- * the service with tapper, and sent. The original message to tappee
- * is also delivered.
+ * Create a new service named #tapper and have messages
+ * copied from #tappee. After this call, messages to tappee 
+ * are copied, modified by replacing the service with tapper,
+ * and sent. The original message to tappee is also delivered.
  */
 int o2_tap(const char *tappee, const char *tapper);
 

src/o2_clock.c

@@ -385,7 +385,7 @@ int o2_roundtrip(double *mean, double *min)
 
 // o2_ping_send_handler -- handler for /_o2/ps (short for "ping send")
 //   wait for clock sync service to be established,
-//   then send ping every 0.1s CLICK_SYNC_HISTORY_LEN times, 
+//   then send ping every 0.1s CLOCK_SYNC_HISTORY_LEN times, 
 //   then every 0.5s for 5s, then every 10s
 //
 void o2_ping_send_handler(o2_msg_data_ptr msg, const char *types,