Document the IO::Select timeout.

p4raw-id: //depot/perl@6586

diff --git a/ext/IO/lib/IO/Select.pm b/ext/IO/lib/IO/Select.pm
index df92b04..e84b54f 100644 (file)
--- a/ext/IO/lib/IO/Select.pm
+++ b/ext/IO/lib/IO/Select.pm
@@ -300,9 +300,9 @@ Return an array of all registered handles.
 =item can_read ( [ TIMEOUT ] )
 
 Return an array of handles that are ready for reading. C<TIMEOUT> is
-the maximum amount of time to wait before returning an empty list. If
-C<TIMEOUT> is not given and any handles are registered then the call
-will block.
+the maximum amount of time to wait before returning an empty list, in
+seconds, possibly fractional. If C<TIMEOUT> is not given and any
+handles are registered then the call will block.
 
 =item can_write ( [ TIMEOUT ] )