--- libev/ev.pod	2007/11/12 08:57:03	1.17
+++ libev/ev.pod	2007/11/12 09:01:12	1.18
@@ -51,6 +51,9 @@
 
 =head1 GLOBAL FUNCTIONS
 
+These functions can be called anytime, even before initialising the
+library in any way.
+
 =over 4
 
 =item ev_tstamp ev_time ()
@@ -562,12 +565,10 @@
 reschedule callback will be called with the watcher as first, and the
 current time as second argument.
 
-NOTE: I<This callback MUST NOT stop or destroy the periodic or any other
-periodic watcher, ever, or make any event loop modifications>. If you need
-to stop it, return C<now + 1e30> (or so, fudge fudge) and stop it afterwards.
-
-Also, I<< this callback must always return a time that is later than the
-passed C<now> value >>. Not even C<now> itself will be ok.
+NOTE: I<This callback MUST NOT stop or destroy any periodic watcher,
+ever, or make any event loop modifications>. If you need to stop it,
+return C<now + 1e30> (or so, fudge fudge) and stop it afterwards (e.g. by
+starting a prepare watcher).
 
 Its prototype is C<ev_tstamp (*reschedule_cb)(struct ev_periodic *w,
 ev_tstamp now)>, e.g.:
@@ -582,6 +583,9 @@
 will usually be called just before the callback will be triggered, but
 might be called at other times, too.
 
+NOTE: I<< This callback must always return a time that is later than the
+passed C<now> value >>. Not even C<now> itself will do, it must be larger.
+
 This can be used to create very complex timers, such as a timer that
 triggers on each midnight, local time. To do this, you would calculate the
 next midnight after C<now> and return the timestamp value for this. How you do this