--- EV/EV.pm	2007/11/01 17:17:32	1.20
+++ EV/EV.pm	2007/11/01 17:20:25	1.21
@@ -293,7 +293,8 @@
 
 This periodic timer is based on "wallclock time", that is, if the clock
 changes (C<ntp>, C<date -s> etc.), then the timer will nevertheless run at
-the specified time.
+the specified time. This means it will never drift (it might jitter, but
+it will not drift).
 
 The C<periodic_ns> variant doesn't start (activate) the newly created watcher.