Added comment explaining `now'.

diff --git a/sysdep/unix/timer.h b/sysdep/unix/timer.h
index ab04aa447904bbdef4e003b33469a5e9701f87a2..10351a61e006e4f544396544126b7041dd46d5b6 100644 (file)
--- a/sysdep/unix/timer.h
+++ b/sysdep/unix/timer.h
@@ -30,6 +30,6 @@ void tm_start(timer *, unsigned after);
 void tm_stop(timer *);
 void tm_dump_all(void);
 
-extern bird_clock_t now;
+extern bird_clock_t now;               /* Time in seconds since unknown epoch */
 
 #endif